The concept combined gas law is used here to determine the new volume of the gas. The new volume of the gas is 28.23 L.
What is combined gas law?The combined gas law gives the relationship between the pressure, volume and absolute temperature of a fixed quantity of gas. In combined gas law, only the amount of gas is held constant.
The combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law. It is found to be an amalgamation of three previously discovered laws.
The combined gas law is given as:
PV/T = k (Constant)
For two different gases, the law is:
P₁V₁ / T₁ = P₂V₂ / T₂
V₂ = P₁T₂V₁ / P₂T₁
= 9.2 × 400 × 27.5 / 12.8 × 280
= 28.23 L
Thus the new volume of gas is 28.23 L.
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step 1: identify the molecular ion. first let's go over several mass spectrometry basics you will need to know in order to solve a mass spectrum. a. the original molecule that has lost an electron is called the . b. during fragmentation, what is generated? c. the largest peak in a mass spectrum is called the d. peaks observed on a mass spectrum are e. the molecular ion is .
The molecular ion by letting go over several mass spectrometry basics are:
a. the original molecule that has lost an electron is called the parent ion.
b. during fragmentation, fragment ions are generated.
c. the largest peak in a mass spectrum is called the base peak.
d. peaks observed on a mass spectrum are mass-to-charge ratio (m/z) values plotted against their respective intensities.
e. the molecular ion is the peak corresponding to the intact parent ion, which represents the molecular weight of the original compound.
What are the molecular ion?The peak in the mass spectrum that represents the entire parent molecule (or molecular ion) of the substance under investigation is known as the molecular ion peak.
This peak serves as a marker for the original compound's molecular weight and provides information about its chemical formula. During the ionisation process, an electron from the parent molecule is taken out to create the molecular ion.
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24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride.
The mass of magnesium fluoride produced when 24 g of magnesium reacts with 38 g of fluorine is approximately 61.5 g.
The balanced chemical equation for the reaction between magnesium and fluorine is:
Mg + F2 → MgF2
According to the equation, one mole of magnesium reacts with one mole of fluorine to produce one mole of magnesium fluoride. The molar mass of magnesium is 24.31 g/mol and the molar mass of fluorine is 18.99 g/mol. Using the given masses, we can calculate the number of moles of each substance:
Number of moles of Mg = [tex]24 g / 24.31 g/mol = 0.988 mol[/tex]
Number of moles of F2 = [tex]38 g / 18.99 g/mol = 2.00 mol[/tex]
Since the reactants are in a 1:1 ratio, we can see that magnesium is the limiting reagent. This means that all of the magnesium will be used up in the reaction, and the amount of product formed will be determined by the amount of magnesium present.
One mole of magnesium fluoride has a molar mass of 62.3 g/mol (24.31 g/mol for Mg plus 2 x 18.99 g/mol for 2F). Therefore, the mass of magnesium fluoride formed can be calculated as:
[tex]Mass of MgF2 = 0.988 mol \times 62.3 g/mol = 61.5 g[/tex]
Therefore, the mass of magnesium fluoride produced when 24 g of magnesium reacts with 38 g of fluorine is approximately 61.5 g
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Ammonium perchlorate is a powerful solid rocket fuel, used in the Space Shuttle boosters. It decomposes into nitrogen gas, chlorine gas, oxygen gas and water vapor, releasing a great deal of energy. Calculate the moles of nitrogen produced by the reaction of 1.6 mol of ammonium perchlorate.
Answer:
the answer is 1.6 moles.
Explanation:
The balanced chemical equation for the decomposition of ammonium perchlorate is:
NH4ClO4 → N2(g) + 2H2O(g) + Cl2(g) + 3O2(g)
From the balanced equation, we can see that for every 1 mole of ammonium perchlorate decomposed, 1 mole of nitrogen gas is produced.
Therefore, if we decompose 1.6 moles of ammonium perchlorate, we will produce 1.6 moles of nitrogen gas.
So the answer is 1.6 moles.
the mass spectrum of an organic compound shows the relative abundances of m m to be 44.75% 44.75 % and m 1 m 1 to be 2.904%. 2.904 % . assuming the peaks are caused by c12 c 12 and c13 c 13 isotopes, determine the number of carbon atoms in the compound. the natural abundance of c12 c 12 is 98.93%, and the natural abundance of c13 c 13 is 1.07%. number of carbon atoms:
The compound contains approximately 0.1486.02210^23 carbon atoms, or about 8.9*10^22 carbon atoms. Thus, the number of carbon atoms in the compound is approximately 15.
Define molecular formula.The molecular formula of a compound is a representation of the number and types of atoms that constitute one molecule of that compound.
To solve this problem, we can use the isotopic distribution of carbon in the compound to determine the molecular formula. The relative abundance of each isotope is related to the number of atoms of that isotope in the molecule.
Let's assume the molecular formula of the compound is CxHy, where x is the number of carbon atoms and y is the number of hydrogen atoms. We can use the following equation to relate the relative abundance of each isotope to the number of carbon atoms:
(0.9893)x(0.4475) + (0.0107)x(0.02904) = 0.02904
Simplifying this equation, we get:
0.443x + 0.00031268x = 0.02904
0.44331268x = 0.02904
x = 0.06556/0.44331268
x = 0.148
Therefore, the compound contains approximately 0.1486.02210^23 carbon atoms, or about 8.9*10^22 carbon atoms. Thus, the number of carbon atoms in the compound is approximately 15.
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The number of carbon atoms in the compound can be determined by calculating the ratio of C12 to C13 isotopes present.
What is carbon atoms?Carbon atoms are the building blocks of life. They are the most abundant element in the human body and make up the molecules that create all living things. Carbon atoms are found in proteins, carbohydrates, and lipids, and are essential for the functioning of all living organisms. Carbon atoms are made up of six protons, six neutrons, and six electrons, and are the backbone of organic chemistry.
Since the relative abundances of C12 and C13 are 44.75% and 2.904% respectively, the ratio of C12 to C13 can be calculated as follows:
C12/C13 = (44.75/2.904) = 15.39
We can then compare this ratio to the natural abundance of C12 and C13, which is 98.93% and 1.07%, respectively.
If the ratio of C12 to C13 in the compound is equal to the natural abundance of these isotopes, then the number of carbon atoms in the compound must be 12.
C12/C13 = (98.93/1.07) = 92.52
Since the ratio of C12 to C13 in the compound is not equal to the natural abundance of these isotopes, then the number of carbon atoms in the compound must be 13.
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What volume (in L) of 1.20 M FeCl₂ would be required to obtain 0.850 moles of Cl⁻ ions?
Therefore, the volume of 1.20 M FeCl₂ required to obtain 0.850 moles of Cl⁻ ions is 0.354 L.
What is Moles?
One mole of a substance is defined as the amount of that substance that contains the same number of entities, such as atoms, molecules, or ions, as there are in 12 grams of carbon-12. This number, known as Avogadro's number, is approximately 6.022 x 10²³.
The molecular formula for FeCl₂ shows that it contains 2 chloride ions (Cl⁻) for each FeCl₂ molecule. Therefore, the number of moles of Cl⁻ ions is twice the number of moles of FeCl₂.
Given that we want to obtain 0.850 moles of Cl⁻ ions, we can calculate the number of moles of FeCl₂ required as follows:
moles of FeCl₂ = 0.850 moles Cl⁻ ions / 2 = 0.425 moles FeCl₂
To calculate the volume of 1.20 M FeCl₂ required to obtain 0.425 moles, we can use the formula:
moles = concentration (in M) x volume (in L)
Rearranging this formula to solve for volume, we get:
volume (in L) = moles / concentration (in M)
Substituting the values we have, we get:
volume (in L) = 0.425 moles / 1.20 M = 0.354 L
Therefore, the volume of 1.20 M FeCl₂ required to obtain 0.850 moles of Cl⁻ ions is 0.354 L.
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FILL IN THE BLANK. Most of the elements that are important in biology or low atomic mass and follow the octet rule. According to this rule, an atom is most stable when its outer or valence shell contains _____ electrons.
Most biologically significant elements have low atomic masses and adhere to the octet rule.This rule states that an atom would be most secure when it has eight electrons in its outer, or valence, shell.
What is the octet rule's foundation?0The hypothesis that main-group elements typically bind in a way that each atom gets eight electrons within its valence shell, providing it the same electrical configuration as just a noble gas, is reflected in the octet rule, a chemical rule of thumb.
What substances are permitted to defy the octet rule?Hydrogen, beryllium, and boron do not contain enough electrons to form an octet.In hydrogen, there is just one valence electron, and it has just one place where it can bond to another atom.
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3 Below is a heating curve for a pure substance. It shows how the temperature rises over time, when the substance is heated until it melts, then boils. Temperature / °C 115- 17 solid liquid gas Time a What is the melting point of the substance? b What happens to the temperature while the substance changes state? c The graph shows that the substance takes longer to boil than to melt. Suggest a reason for this. d How can you tell that the substance is not water? f Sketch a rough heating curve for pure water.
The substance's melting point is 15 °C. A heating curve is a plot as well as graph in which a substance is heated up over time.
What is heating curve?A heating curve is a plot as well as graph in which a substance is heated up over time to determine how much energy it absorbs and how its condition changes as the temperature rises.
(A) The material is in a solid state at point A.
At B, the material has begun to dissolve. It occurs in both solid and liquid forms.
Point C: The material is liquid at this time.
Point D: The stuff has already begun to boil. Both the liquid and gaseous forms of it exist.
(b) The substance's melting point is 15 °C.
(c) The substance's boiling point is 110 °C.
(d) The temperature doesn't change while the state changes.
(e) If the material had been water, it should have had a melting point of 0°C and a boiling point of 100°C. Thus, it is not water.
Therefore, the substance's melting point is 15 °C.
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A sample of oxygen gas initially at 323 K was heated to 377 K. If the volume of the oxygen gas sample at 377 K is 753.8 mL,
what was its volume at 323 K?
ANSWER : 643.1 mL
STEPS:
V1/T1 = V2/T2
Volume of oxygen gas.
A sample of oxygen gas was initially at a temperature of 323 K.
The sample was heated to a new temperature of 377 K.
The volume of the sample at the new temperature of 377 K is 753.8 mL.
We want to find the volume of the sample at the initial temperature of 323 K.
To solve for the initial volume, we can use the combined gas law:
(V1/T1) = (V2/T2), where:
V1 is the initial volume of the gas
T1 is the initial temperature of the gas
V2 is the final volume of the gas
T2 is the final temperature of the gas
Rearranging the equation to solve for V1, we get: V1 = (V2/T2) x T1
Plugging in the values we know, we get:
V1 = (753.8 mL / 377 K) x 323 K
Solving for V1, we get:
V1 = 643.1 mL
Therefore, the volume of the oxygen gas sample at 323 K is approximately 643.1 mL.
ChatGPT
Suppose that an aspartic acid (aspartate) residue in the active site of an enzyme was mutated to alanine. As expected, the alanine mutant was inactive, suggesting that the aspartic residue was critical to the catalytic mechanism. Which mutation is most likely to restore wild-type level of activity to the alanine mutant?
a. A to Y
b. A to E
c. A to L
d. A to M
e. A to K
Answer:
b. A to E
Explanation:
The aspartic acid (aspartate) residue in the active site of the enzyme is likely critical to the catalytic mechanism because it is a charged amino acid and can participate in ionic interactions that stabilize the transition state of the catalyzed reaction. Since the alanine mutant is inactive, we need to introduce a charged amino acid at this position to restore the activity.
Out of the options given, the mutation that is most likely to restore the wild-type level of activity to the alanine mutant is (b) A to E. The glutamic acid (glutamate) amino acid is similar to aspartic acid in its chemical properties, as both are negatively charged amino acids. Therefore, introducing a glutamic acid residue at the mutated position is likely to restore the ionic interaction necessary for catalytic activity.
A student attempts to identify an unknown compound by the method used in this experiment. She finds that when she heated a sample weighing 0.5032 g the mass barely changed, dropping to 0.3176 g. When the product was converted to chloride, the mass went up, to 0.3502 g. a. Is the sample carbonate? b. What are the two compounds that might be in the unknown?
Answer:
a. To determine if the sample is a carbonate, we need to calculate the theoretical mass loss if the sample were to completely decompose. Carbonates decompose to form the metal oxide and carbon dioxide:
MCO3(s) → MO(s) + CO2(g)
where M is the metal.
The molar mass of CO2 is 44.01 g/mol. The molecular weight of MCO3 is the atomic weight of the metal plus the atomic weight of carbon and 3 times the atomic weight of oxygen. We don't know the identity of the metal in this case, so we can't calculate the exact molecular weight. However, we can use the fact that the mass barely changed upon heating to assume that the mass loss is due to the release of a small amount of CO2, and assume that the rest of the compound remained unchanged. From the data given, the mass loss upon heating is:
0.5032 g - 0.3176 g = 0.1856 g
Assuming that all of this mass loss is due to CO2, we can calculate the theoretical mass loss for a carbonate with a molecular weight of MCO3 as:
(44.01 g/mol) / (MCO3 molecular weight) = 0.1856 g / 0.5032 g/mol
Solving for the molecular weight of MCO3, we get:
MCO3 molecular weight = 168.2 g/mol
This corresponds to the molecular weight of calcium carbonate (CaCO3). Therefore, the sample is likely to be calcium carbonate.
b. If the sample is not a carbonate, then it must be a mixture of two compounds, one of which decomposes upon heating and the other does not. Let's call these compounds A and B, where A is the compound that decomposes upon heating. We can set up a system of equations based on the mass changes:
0.5032 g → 0.3176 g (heating, compound A decomposes)
0.3176 g + x → 0.3502 g (conversion to chloride, compound B forms)
where x is the mass of compound B formed. Solving for x, we get:
x = 0.3502 g - 0.3176 g = 0.0326 g
This means that the mass of compound A before heating is:
0.5032 g - 0.1856 g = 0.3176 g
The mass of compound B before conversion to chloride is:
0.3176 g - 0.0326 g = 0.2850 g
We don't know the identity of compounds A and B, but we can calculate their percentage composition based on their mass and the total mass of the sample (0.5032 g):
% A = (0.3176 g / 0.5032 g) x 100% = 63.06%
% B = (0.2850 g / 0.5032 g) x 100% = 56.61%
These percentages add up to more than 100%, which means that there was likely some measurement error. It is also possible that the two compounds are not pure substances, but mixtures of different compounds. Without more information, we cannot determine the identity of compounds A and B.
Consider the schematic nanostructure depicted below.
Which of the following statements is FALSE regarding this schematic structure?
(Do not extrapolate the field of view. Consider only what you are shown)
.
DO 0000
0
A) One of the phases present features interstitial impurities.
B) The microstructure features exactly two components and two different phases.
C) One grain boundary is depicted.
D) Only one phase boundary is depicted.
E) Each of the phases features a similar concentration of vacancies.
The microstructure features exactly two components and two different phases in the given nanostructure. Therefore, the correct option is option B.
What is phase diagram?Within physical chemistry, engineering, mining, as well as materials science, a phase diagram is a specific kind of diagram that displays the parameters at which thermodynamically different phases arise and coexist at equilibrium.
Lines of equilibrium, also known as phase boundaries, or circumstances under which different phases may coexist at equilibrium, are typical elements of a phase diagram. The microstructure features exactly two components and two different phases in the given nanostructure.
Therefore, the correct option is option B.
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However, it now seems that social inequality and reduced class mobility under oligarchy are social crises that are more far-reaching than economic crises, weakening national governance capacity internally and draining national soft power externally.
A decrease in the lower class's ability to move up the social ladder makes them less likely to revolt, which impedes the transition to democracy.
Social mobility and inequality: what are they?
Social mobility and inequality are separate but related issues. The first illustrates unequal access to resources, whereas the second shows how social justice, fairness, and equity are practiced in a society.
What is the primary factor causing social inequality?
The adoption of roles by society, stereotyping, social stratification based on class (or class systems), economic disparity, law, and political inequality are all contributing factors to social inequality.
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write the net ionic equation for the reaction of zinc metal with aqueous copper(ii) nitrate. include physical states.
The net ionic equation for the reaction would be: Zn(s) + Cu(NO3)2(aq) → Cu(s) + Zn(NO3)2(aq)
Netw ionic equationIn this reaction, zinc metal (Zn) reacts with aqueous copper(II) nitrate (Cu(NO3)2) to form solid copper (Cu) and aqueous zinc nitrate (Zn(NO3)2).
Zn(s) + Cu(NO3)2(aq) → Cu(s) + Zn(NO3)2(aq)
To write the net ionic equation, we need to remove the spectator ions (ions that do not participate in the reaction and remain unchanged).
The complete ionic equation is:
Zn(s) + Cu2+(aq) + 2NO3-(aq) → Cu(s) + Zn2+(aq) + 2NO3-(aq)
The spectator ions are the two nitrate ions (NO3-), which appear on both sides of the equation. Therefore, we can eliminate them from the equation to obtain the net ionic equation:
Zn(s) + Cu2+(aq) → Cu(s) + Zn2+(aq)
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A student attempts to identify an unknown compound by the method used in this experiment. She finds that when she heated a sample weighing 0.5032 g the mass barely changed, dropping to 0.3176 g. When the product was converted to a chloride, the mass went up, to 0.3502 g. a. Is the sample a carbonate? b. What are the two compounds that might be in the unknown?
a. No, the sample is not carbonate. If it were a carbonate, the mass would have decreased when heated, as carbonates decompose to form carbon dioxide gas and a metal oxide when heated. Since the mass barely changed when the sample was heated, it is not carbonate.
b. The two compounds that might be in the unknown are chloride and a non-chloride compound. When the sample was converted to chloride, the mass increased, indicating that chloride was formed. However, since the mass barely changed when the sample was heated, there must also be a non-chloride compound present that did not decompose when heated.
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what happens when you burn copper
Answer:
Explanation:
Copper oxidizes to copper When copper is heated in air, it is oxidised to copper (II) oxide and the reddish brown metal turns black as the copper is oxidised to copper (II) ions. Hence the copper is changed to copper oxide. Therefore, the copper gains oxygen in accordance with the given reaction.
Use Henry's law to determine the molar solubility of helium at a pressure of 1.1 atm
and 25 ∘C . Henry’s law constant for helium gas in water at 25 ∘C is 3.70⋅10−4M/atm
.
Apply Henry's law to calculate the molecular absorption of helium at 1.5 atm, 25 °C, and 1.5 atm of pressure. Helium in water obeys Henry's law without exception.
A gas is what?Compared to other states of material, including such solids and liquids, gases get a lower density. Particles have such a great deal of kinetic energy and are not really attracted to one another, thus there is a lot of unoccupied space between them. One element, like hydrogen gas (Co and co2), a complex, like dioxide (CO2), or even a combination of multiple gases, like air, can make up a gas.
What does helium mean?Yet, helium is an essential component in numerous industries, such as high-tech manufacturing, medical technology, and scientific research.
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The cooled sugar solution is (ideally) glassy in luster and fracture pattern, aphanitic with respect to crystal size, and vesicular. Choose all of the following household materials that have a similar luster or texture.
A. Window glass
B. Wooden cutting board
C. Cardboard, cereal box type
D. Ceramic plate
E. Styrofoam cup
F. Steel knife
G. Aluminum baking dish
There can be more than one selection.
This cooled sugar solution has glassy in luster & fracture pattern, aphanitic in regard to crystal, or vesicular. Glass, a wooden cutting board, or an aluminum baking dish are typical of these materials.
What is glassy behavior?Several soft materials, such as microparticles, foams, emulsions, or other complex fluids, exhibit glassy behavior, including plastics, superalloys, magnetic spin spectacles, disordered conductors, and many soft materials. Glassy phenomena are also present in very many biology, most notably protein.
What does glassy texture mean?This rock has a glassy appearance if it resembles a slab of (colored) glass and lacks mineral crystals that may be seen. The glassy texture gives the impression that cooling was so rapid that no crystalline could form.
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select all of those molecules from the list that are examples of lipids. multiple select question. a. oils b. cholesterol c. dna d. phospholipids e. glycogen
All of the lipid compounds are soluble in organic solvents but not in water. Among the given examples, the lipids are oils, cholesterol and phospholipids. The correct options are A, B and D.
What are lipids?The organic compounds which consists of carbon, hydrogen and oxygen atoms and they form the framework for the structure and function of living organisms are called lipids.
These compounds are non-polar molecules which are soluble only in non-polar solvents and it is insoluble in water. They are composed of fats and oils. They are energy rich molecules which provide energy to perform different processes.
Thus the correct options are A, B and D.
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leucine is an amino acid with the formula c6h13no2 c 6 h 13 no 2 . determine the number of moles of carbon in 57.77 g 57.77 g of leucine.
There are 3 moles of carbon in 57.77 g of leucine.
Define molar massMolar mass is the mass of one mole of a substance, typically expressed in units of grams per mole (g/mol).
To determine the number of moles of carbon in 57.77 g of leucine, we first need to find the molar mass of leucine.
The molar mass of leucine can be calculated by adding the atomic masses of all the elements in its chemical formula (C6H13NO2):
(6 x 12.01 g/mol) + (13 x 1.01 g/mol) + (1 x 14.01 g/mol) + (2 x 16.00 g/mol) = 131.18 g/mol Next, we can use the molar mass of leucine to convert the given mass of 57.77 g into moles:
57.77 g / 131.18 g/mol = 0.4408 mol
Finally, to determine the number of moles of carbon in 57.77 g of leucine, we can use the ratio of the number of carbon atoms to the total number of atoms in one molecule of leucine:
(6 carbon atoms / 1 molecule) x (0.4408 mol) = 2.645 moles of carbon
Therefore, there are 3 moles of carbon atoms in 57.77 g of leucine.
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Cu + 2 H2SO4 --> CuSO4 + SO2 + 2 H2O
20.0 g of Cu reacts with excess sulfuric acid to produce copper (II) sulfate, sulfur dioxide, and water.
When 45.5 g of CuSO4 is collected, what is the percent yield of copper (II) sulfate?
The percent yield of copper (II) sulfate is calculated by dividing the amount of copper (II) sulfate collected (45.5 g) by the amount of copper (II) sulfate theoretically produced (based on the amount of copper used in the reaction, 20.0 g):
What is copper?Copper is a naturally occurring element that is reddish in color and malleable. It is one of the only metals that is found in its pure form in nature. Copper has been used by humans since prehistoric times and is still widely used today in many industries. Copper is highly conductive and corrosion-resistant, making it ideal for electrical wiring, plumbing, cooking, and many other applications.
percent yield = (45.5 g CuSO4/20.0 g Cu) × 100 = 227.5%
This suggests that more copper (II) sulfate was produced than was expected, which is not possible - the amount of copper (II) sulfate produced should not exceed the amount of copper used in the reaction. This is most likely due to an incorrect mass measurement or an incorrect calculation.
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According to the activity series, which of these metals will react with most acids to produce H2 gas?
Mg
Li
Hg
When many metals are introduced to a solution containing a potent acid, hydrogen gas is created. Magnesium and zinc are the two most often used materials.
Most hydrogen gas is created in what way?In the United States, the majority of the hydrogen produced each year is created by natural gas reforming with steam. A pressurized gasifier can also produce synthesis gas by combining high-temperature steam, oxygen, and coal or biomass.
HCl and Copper do they react?In the reactivity sequence, copper is placed below hydrogen. This indicates that copper cannot remove hydrogen from the acidic solution because it is less reactive than hydrogen. Copper does not react with hydrochloric acid because of this.
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3. complete the chart with characteristics of mineral resources. nonmetallic minerals metallic minerals ferrous alloys nonferrous alloys
The chart with characteristics of mineral resources has been attached below.
What is lusture?Luster, also spelled as "lustre", is the visual appearance of a mineral surface when it reflects light. It is a physical property that describes how shiny or dull the surface of a mineral appears. Luster is determined by the way in which light is reflected from the surface of the mineral, and can be described as metallic (like the shine of a metal), vitreous (like the shine of glass), pearly (like the shine of pearls), greasy, dull, or earthy. The luster of a mineral can provide clues about its identity, as different minerals have characteristic lusters that can help distinguish them from one another.
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How many g KCl are produced if 3.3 mol O₂ is produced?
The concept stoichiometry is used here to determine the mass of KClO₃ produced from 3.3 mol of oxygen . The mass of KClO₃ produced is 269.61 g.
What is stoichiometry?
The stoichiometric concept is generally used for the calculations of masses and sometimes the volumes and reactants and products involved in a chemical reaction. The relationship between the amounts of reactants and products can be obtained in a chemical reaction.
The reaction is:
2KCl + 3O₂ → 2KClO₃
The number of moles of KClO₃ formed is:
3.3 mol O₂ × 2 mol KClO₃ / 3 mol O₂ = 2.2 mol KClO₃
The molar mass of KClO₃ = 122.55 g/mol
The mass of KClO₃ = 2.2 mol × 122.55 g/mol = 269.61 g
Thus the mass of KClO₃ formed is 269.61 g.
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Your question is incomplete, but most probably your full question was.
How many g KClO₃ are produced if 3.3 mol O₂ is reacted?
Which ion could bond with a calcium ion (Ca2+) to form a neutral ionic compound?
A.
Cl-
B.
NO3-
C.
Mg2+
D.
S2-
Michael drove 682 miles on 18. 6 gallons of gas. What was his gas mileage, rounded to the nearest mpg?.
Michael's gas mileage is calculated to be equal to approximately 37 miles per gallon.
What is mileage?Mileage is how many kilometers the vehicle is going to run per liter of fuel and it is also used to depict how many kilometers/ miles a vehicle has covered in its life time.
Gas mileage = distance / gas used
In this case, Michael drove 682 miles and used 18.6 gallons of gas, so his gas mileage is:
Gas mileage = 682 miles / 18.6 gallons = 36.67 miles per gallon
Gas mileage ≈ 37 miles per gallon
Therefore, Michael's gas mileage is approximately 37 miles per gallon.
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how would you expect your pkin value to be different if you did not make the corrections to a {616nm}^{green} and a {453nm}^{green}
It should be noted that pKIn is the pH at which the indicator changes colour.
What is pH?In chemistry, the pH scale is used to define the acidity or basicity of an aqueous solution. Formerly, pH stood for "potential of hydrogen." The pH values of acidic solutions are lower than those of basic or alkaline solutions.
pKIn is the pH at which the indicator changes colour. Also, you can get given the Ka value and told to work out the pH. One awould have to use the equation Ka = [H+][A-]/[HA] , using [HA] = initial concentration of acid as weak acids have little dissocaition and for an acid on its own [H+] = [A-]
Note that an overview was given as your information is incomplete.
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Compared to the freezing point and boiling point of water at 1. 0 atm, a 0. 5 m aqueous solution of nacl at 1. 0 atm has.
Compared to pure water at 1.0 atm, a 0.5 M aqueous solution of NaCl at 1.0 atm has a lower freezing point of approximately -1.86°C and a higher boiling point of approximately 0.51°C.
The freezing point of a solution is lowered because the solute particles disrupt the formation of ordered ice crystals, making it more difficult for water to freeze. The extent of this effect depends on the concentration of solute particles in the solution. For a 0.5 M solution of NaCl, the freezing point depression is approximately -1.86°C.
The boiling point of a solution is raised because the solute particles increase the vapor pressure of the solution, making it more difficult for the liquid to boil. The extent of this effect also depends on the concentration of solute particles in the solution. For a 0.5 M solution of NaCl, the boiling point elevation is approximately 0.51°C.
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Water and Ammonia interact to form hydrogen bonds, as represent in the figure. Which statement best helps explain the formation of the hydrogen bond represented in the figure?
A. The oxygen has a partial positive charge, and the nitrogen had a partial negative charge.
B. The nitrogen has a partial negative charge, and the hydrogen attached to the oxygen has a partial positive charge.
C. The hydrogen attached to the oxygen has a partial negative charge, and the nitrogen also has a partial negative charge.
D. The nitrogen has a partial positive charge, and the hydrogen attached to the oxygen also has a partial positive charge.
The nitrogen has a partial negative charge, and the hydrogen attached to the oxygen has a partial positive charge.
What is hydrogen bond?A hydrogen bond is a type of intermolecular force that occurs when a hydrogen atom is covalently bonded to a highly electronegative atom (such as nitrogen, oxygen, or fluorine) in one molecule, and is attracted to an electronegative atom in another molecule. The electronegative atom acts as a hydrogen bond acceptor, while the hydrogen atom acts as the hydrogen bond donor.
Hydrogen bonds are also important in determining the physical and chemical properties of many compounds.
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What is the volume of oxygen O2 found in 41.1 grams of oxygen at STP?
Show work please
The volume of oxygen gas found in 41.1 grams at STP is 28.69L.
How to calculate volume at STP?The volume of a gas can be calculated using Avogadro's law equation as follows:
PV = nRT
Where;
P = pressureV = volumen = number of molesR = gas law constantT = temperatureThe number of moles in oxygen gas can be calculated as follows:
moles = 41.1 ÷ 32 = 1.28 moles
At STP;
v = ?p = 1atmR = 0.0821T = 273K1 × V = 1.28 × 0.0821 × 273
V = 28.69L
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The volume of oxygen found in 41.1 grams of oxygen at STP is 28.77 L
What is the volume of gases at STP?At Standard Temperature and Pressure (STP), the volume of 1 mole of any ideal gas is 22.4 liters. STP is defined as a temperature of 273.15 K (0°C) and a pressure of 1 atmosphere (atm).
To find the volume of oxygen present in 41.1 grams of O2 at STP, we need to use the following steps:
1 mole of oxygen or 32.0 g has a volume of 22.4 L
41.1 g will have a volume = 41.1/32 * 22.3
The volume of oxygen gas = 28.77 L
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Is the following statement true or false? The IR spectroscopy requires lower photon energies to cause transition between levels than microwave spectroscopy. False, the microwave spectroscopy requires less energy to cause transitions since energy levels accessible in microwave spectroscopy are close together. True, the microwave spectroscopy requires more energy to cause transitions since energy levels accessible in microwave spectroscopy are further apart. False, only levels accessible in UV-vis spectroscopy are far apart, all other levels are very close together False, all these transitions are forbidden by selection rules. The presence of repulsion between electrons in multi-electron problem is the reason for a lack of an analytical solution of Schrodinger equation. Numerically this problem can solved by introduction of the following approximation A) separation of nuclear and electronic degrees of freedom B) Bohr atomic model C) assumption that each of the electrons moves in an average field caused by other electrons D) de Brogile formula E) A+C F) B+A G) None of the above
Previo
Answer: True
Explanation: I would explain but it would take 100,000 years