The point of this problem was to show how the conversion of a reaction can be affected by changes in the molar feed rate of one of the reactants.
What is reactants?Reactants are the substances that take part in a chemical reaction. They are the substances that enter into the reaction and are changed into the products of the reaction. Reactants are the starting materials that are used to form the products. Reactants can be elements, compounds, or mixtures of substances. Reactants must interact with each other in order for a chemical reaction to occur. Reactants are consumed during the reaction, and the products are what is left over after the reaction has taken place. Reactants are also known as substrates in biochemistry.
The conversion of A would be 40%.
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Complete the photosynthesis reactions by placing the following items as reactants, energy sources, or products of these reactions. Not all labels will be placed.
6CO2 + 6H2O = C6H12O6 + ....
Energy source: ....
The reactants, products and energy sources of the photosynthetic reaction are as follows:
Reactants: carbondioxide and glucoseproducts: glucose and oxygenenergy source: ATPWhat is photosynthesis?Photosynthesis is any process by which plants and other photoautotrophs convert light energy into chemical energy.
Photosynthesis combines carbondioxide and water to produce glucose and oxygen with the dispense of energy.
Carbondioxide and water can be classified as reactants while glucose and oxygen can be regarded as products.
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in which type of extracellular fluid can an animal cell undergo lysis?
Explanation:
An animal cell can undergo lysis in a hypertonic solution.
Which of the following best describes the physical appearance of a compound when the end of its melting point range is reached?A. The compound begins toconvert to a liquidB. The compound completely converts to a liquidC. The compound begins toevaporateD. Gas from the compound begins to condense on the side of the tube.
The one that describes the physical appearance of the compound when the end of its melting point range is reached is the correct option is B. The compound completely converts to a liquid.
The melting point is the temperature at which the solid and the liquid will forms of the pure substance that can exist in equilibrium. The heat is applied to the solid, and its temperature will be increase as the melting point will be reached. The more heat then will be convert to the solid into the liquid with the no temperature change.
Thus, the compound will be completely converts to the liquid as the end of its melting point range.
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Heat of combustion chemistry
The heat of combustion per gram of candle for each trial is:
Trial 1: Heat of combustion per gram = 30.8 kJ/gTrial 2: Heat of combustion per gram = 30.8 kJ/gTrial 3: Heat of combustion per gram = 26.4 kJ/gWhat is the heat of combustion per gram of candle for the trials?To calculate the heat of combustion per gram of candle for each trial, we use the formula below:
Heat absorbed, Q = mcΔT
where;
m is the mass of waterc is the specific heat capacity of water (4.184 J/g·°C)ΔT is the temperature changeSince the density of water is 1 g/mL, the volume of water = mass of water
Trial 1:
mass of candle burnt = 0.12 g
temperature change of water = 8.1° C
volume of water = 99.9 mL
Q = 99.9 * 4.184 * 8.1
Q = 3390 J or 3.39 kJ
The heat of combustion per gram = 3.39/0.12
The heat of combustion per gram = 28.3 kJ/g
Trial 2:
mass of candle burnt = 0.11 g
temperature change of water = 8.1° C
volume of water = 100 mL
Q = 100 * 4.184 * 8.1
Q = 3390 J or 3.39 kJ
The heat of combustion per gram = 3.39/0.11
The heat of combustion per gram = 30.8 kJ/g
Trial 3:
mass of candle burnt = 0.13 g
temperature change of water = 8.2° C
volume of water = 100.1 mL
Q = 100.1 * 4.184 * 8.2
Q = 3430 J or 3.43 kJ
The heat of combustion per gram = 3.43/0.11
The heat of combustion per gram = 26.4 kJ/g
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A chef finds a sealed container consisting of an ingredient that goes into his restaurant’s secret sauce. The ingredient’s molecules are moving in place. What will happen if the chef causes the ingredient to change phase by transferring energy into it?
After the phase change, the ingredient’s molecules will move . . .
answer choicesa. faster, and the ingredient will be a solid.
b. faster, and the ingredient will be a liquid.
c. slower, and the ingredient will be a solid.
d. slower, and the ingredient will be a liquid.
b. faster, and the ingredient will be a liquid.
Calculate [h+] for a solution in which [oh−] is 100 times greater than [h+]
The concentration of hydrogen ions in the solution is 1.0 x 1[tex]0^{-8}[/tex] M.
To calculate the [H+] for a solution in which [OH-] is 100 times greater than [H+], we can use the equation for the ion product constant for water:
Kw = [H+][OH-]
Where Kw is the ion product constant for water, [H+] is the concentration of hydrogen ions, and [OH-] is the concentration of hydroxide ions. Since we are given that [OH-] is 100 times greater than [H+], we can write:
[OH-] = 100[H+]
Substituting this into the equation for Kw, we get:
Kw = [H+](100[H+])
Rearranging and solving for [H+], we get:
[H+]^2 = Kw/100
[H+] = √(Kw/100)
Since Kw is 1.0 x 1[tex]0^{-14}[/tex] at 25°C, we can substitute this value into the equation and solve for [H+]:
[H+] = √(1.0 x 1[tex]0^{-14}[/tex]/100)
[H+] = √(1.0 x 1[tex]0^{-16}[/tex])
[H+] = 1.0 x 1[tex]0^{-8}[/tex]
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why is iodide a stronger reducing agent than bromide
Iodine is not as effective an oxidizer as bromine. In order to produce iodine, bromine can strip iodide ions of their electrons, and the iodine cannot recover its electrons from the resulting bromide ions.
Sulfuric acid concentration working as an oxidizing agent
containing chloride or fluorine
The oxidizing power of concentrated sulfuric acid is insufficient to oxidize fluorine or chloride. Only the steamy vapors of the hydrogen halide—hydrogen fluoride or hydrogen chloride—are generated in those circumstances. Fluoride and chloride are not powerful enough reducing agents to decrease sulfuric acid in terms of the halide ions. For iodides and bromides, this is not the situation.
with bromine
Sulfuric acid can be reduced by bromide because it is a powerful reducing substance. In the procedure, bromine is produced from bromide.
The oxidation state of sulfur changes from +6 to +4 when bromide converts sulfuric acid to sulfur dioxide gas.
In actuality, the steamy hydrogen bromide fumes tainted with brown bromine vapor serve as evidence of this interaction. Since sulfur dioxide is an invisible vapor, it is impossible to see it.
Using iodide
Iodide is a more potent reduction agent than bromide, and sulfuric acid converts it to iodine.
Sulfuric acid reduction is trickier than bromine reduction. It can be lowered in three stages using iodide.
(Sulfur oxidation state = +4) sulfuric acid to sulfur dioxide
pure sulfur to sulfur dioxide (oxidation state = 0)
hydrogen sulfide from sulfur (sulfur oxidation state = -2).
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The gas left in a used aerosol can is at a pressure of 3.2 atm at 38°C. If this can is thrown into a fire, what is the internal pressure of the gas when its temperature reaches 433°C?
Therefore, the internal pressure of the gas in the can when its temperature reaches 433°C is approximately 52.9 atm.
What is pressure?In physics, pressure is defined as the force applied per unit area. It is a scalar quantity and is expressed in units such as pascals (Pa), pounds per square inch (psi), or atmospheres (atm). Pressure can be exerted by a gas or a liquid, and it is related to the density and temperature of the substance. It is an important concept in many areas of science and engineering, including fluid dynamics, thermodynamics, and materials science.
Here,
To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:
P1V1/T1 = P2V2/T
where P1, V1, and T1 are the initial pressure, volume, and temperature, and P2, V2, and T2 are the final pressure, volume, and temperature.
We can assume that the volume of the can is constant, so V1 = V2. We also need to convert the temperatures to Kelvin by adding 273.15 to them.
Plugging in the given values, we get:
(3.2 atm)(V) / (38°C + 273.15) = P2(V) / (433°C + 273.15)
Simplifying and solving for P2, we get:
P2 = (3.2 atm)(433°C + 273.15) / (38°C + 273.15)
= 52.9 atm
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3. If possible and with your teacher's approval, carry out your investigation. Make a data table and record your observations there. Make a note of any unusual or missing data that might be caused by experimental error.
The activity described is an investigation, which is a scientific process of collecting data through observations, experiments, and analysis to answer a specific question or to solve a problem.
How can the activity be executed?To execute this activity, you need to obtain the necessary materials and equipment, and conduct the experiment as per the guidelines provided.
You should record all your observations, measurements, and data in a table, noting any unusual or missing data that may be due to experimental error.
It is important to obtain your teacher's approval before conducting the investigation to ensure that you are following proper scientific protocols and safety guidelines. Finally, you will analyze the data collected to draw conclusions and communicate your findings.
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Indigestion tablets neutralise stomach acid.
What does this tell you about indigestion tablets?
Answer: It is a alkaline substance/base and it is an antacid
Explanation: Neutralisation is the reaction between an acid and a base, in this scenario, it is the stomach acid and the indigestion tablets (base). They react to form salt and water
What is NO compound called?
NO is called nitric oxide.
NO is a chemical compound composed of one nitrogen atom and one oxygen atom. It is a colorless gas that is a free radical, meaning it has an unpaired electron. Nitric oxide is an important signaling molecule in many physiological and pathological processes in the human body.
It plays a crucial role in the regulation of blood pressure, immune system function, and neurotransmission. Nitric oxide is also involved in the formation of smog and acid rain in the atmosphere, as well as in the production of fertilizers and explosives in industry.
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What is the frequency of a sound with a wavelength of 4.22 m and having a wave speed of 12.6 m/s?
The frequency of this sound is 2.86 Hz with a wavelength of 4.22 m and having a wave speed of 12.6 m/s.
What is the wavelength ?Wavelength is the distance between repeating units of a waveform, such as points on a wave or crests and troughs. It is commonly measured in meters. The wavelength is related to the frequency of a wave by the formula wavelength = speed of wave/frequency. The speed of a wave is often determined by the medium it is traveling through; for example, sound waves travel much faster through air than through water. Wavelength is an important factor in determining the properties of a wave, such as its energy, direction, and amplitude.
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What is the ph what f a 1. 10x10-3 m solution of phenol, hc6h5o? the pjs of hc6h5o is 9. 89
The pH of a 1.10 x 1[tex]0^{-3}[/tex] M solution of phenol (HC6H5O) is 9.89.
To calculate the pH of a solution, you need to know the concentration of the H+ ions in the solution. This can be determined using the following equation:
H+ = [H+]standard x 10-pH
Where [H+]standard is the concentration of H+ ions in a standard solution, which is 1 M in this case. So, rearranging the equation, we get:
pH = -log[H+]standard + log [H+]
Therefore, the pH of a 1.10 x 1[tex]0^{-3}[/tex] M solution of phenol (HC6H5O) can be calculated as follows
pH = -log (1 M) + log (1.10 x 1[tex]0^{-3}[/tex] M)
pH = 9.89
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dissolving a solute such as KOH in a solvent such as water results in A.) a decrease in the vapor pressure of the liquid B.) a decrease in the boiling point of the liquid C.) no change in the boiling point of the liquid D.) an increase in the melting point of the liquid
Dissolving a solute such as KOH in a solvent such as water results in a decrease in the vapor pressure of the liquid.
This is because the solute particles occupy some of the solvent space and reduce the number of solvent molecules at the surface of the liquid, which decreases the rate of evaporation and hence the vapor pressure.
The presence of a non-volatile solute also affects the boiling point of the liquid. It causes the boiling point of the solution to be higher than the boiling point of the pure solvent, a phenomenon known as boiling point elevation.
This happens because the solute particles attract solvent molecules and reduce the ability of the solvent molecules to escape from the liquid phase as vapor, which requires an increase in temperature to boil the solution. Therefore, option B ("a decrease in the boiling point of the liquid") is incorrect.
The solute-solvent interaction also affects the melting point of the solvent. In general, the presence of a solute lowers the melting point of the solvent due to the disruption of the solvent-solvent interactions by the solute-solvent interactions. Therefore, option D ("an increase in the melting point of the liquid") is also incorrect.
Option C ("no change in the boiling point of the liquid") is not correct either, as the boiling point of the liquid is affected by the presence of the solute in the solvent, as mentioned earlier.
Hence, the correct answer is option A ("a decrease in the vapor pressure of the liquid").
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a scientist mixes 0.02 g of a strong base in 83 ml of water and obtains a ph of 12. he then realizes that he forgot to label the container and forgot what base he added. what is the most likely the identity of this base?
a. LiOH
b. NaOH
c. RbOH
d. KOH
The calculated pKb value of 4.22 is closest to the pKb value of LiOH, so it is likely that the strong base added to the solution is LiOH. The most likely identity of the base added to the solution is LiOH.
To determine the identity of the strong base added to the solution, we can use the pH value and the amount of the base added.
First, we need to calculate the concentration of the strong base in the solution. We can do this by converting the mass of the base (0.02 g) to moles, and then dividing by volume of the solution (83 mL or 0.083 L):
moles of base = (0.02 g) / (molar mass of base)
molar mass of NaOH = 22.99 + 16.00 + 1.01 = 40.00 g/mol
moles of NaOH = (0.02 g) / (40.00 g/mol) = 0.0005 mol
concentration of base = moles of base / volume of solution
concentration of base = 0.0005 mol / 0.083 L = 0.006 M
Next, we can use the fact that pH = 14 - pOH to calculate the pOH of the solution:
pH = 12
pOH = 14 - pH = 14 - 12 = 2
Now we can use the pOH and concentration of the base to calculate the pKb of the base:
pKb = pOH + log([H₂O]/[base])
pKb = 2 + log(1/[0.006])
pKb = 2 + 2.22 = 4.22
Finally, we can compare the pKb value of the base to the pKb values of known strong bases to determine the most likely identity of the base. The pKb values of some common strong bases are:
LiOH: pKb = 0.19
NaOH: pKb = 0.20
KOH: pKb = 0.17
CsOH: pKb = 0.08
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Calculate the mass of iron sulphide produced when 320g of sulphur is reacted with excess iron
The concept stoichiometry is used here to determine the mass of iron sulphide produced. The mass of FeS formed from 320g of sulphur is 878.5 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.
Molar mass of 'Fe' = 55.85 g/mol
Molar mass of 'S' = 32 g/mol
The molar mass of FeS = 55.85 + 32 = 87.85 g/mol
The reaction between 'Fe' and 'S' is:
Fe + S → FeS
Here 1 mole of FeS is formed from 1 mole of 'S'.
The amount of FeS formed by 32 g 'S' = 87.85 g
The amount of FeS formed by 320 g of 'S' = (320 × 87.85) / 32 = 878.5 g.
Thus the mass of 'FeS' produced is 878.5 g.
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Suggest a method for separating the peptides produced by chymotrypsin treatment.
Check all that apply.
1) Electrophoresis
2) Chromatography on a cationic column, at pH=7
3) Size exclusion chromatography
4) Chromatography on a anionic column, at pH=4
The method for separating the peptides produced by chymotrypsin treatment are Electrophoresis, Size exclusion chromatography. The correct option are 1) and 3).
The Electrophoresis will be used to separate the peptides based on the charge properties and the size. The Peptides with the net positive charge would be move towards the negative electrode, and while the peptides with the net negative charge would be move towards the positive electrode.
The Size exclusion chromatography can be used to separate the peptides on the basis of the size. The Peptides that are the larger would be elute the earlier, while the smaller peptides would be elute the later, as they will pass through the porous stationary phase. Therefore , the correct options are 1) and 3)
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what is the experimental group in the alka-seltzer experiment
The Alka-Seltzer experiment's experimental group is the group of volunteers who are given Alka-Seltzer pills to ingest.
The experiment's goal is to test the hypothesis that Alka-Seltzer pills will shorten the time it takes for stomach discomfort to go away. The control group consists of volunteers who were given a placebo, or a false drug, instead of the Alka-Seltzer pills.
The experimental group is critical to the experiment because it allows for a comparison of the outcomes seen in subjects given Alka-Seltzer pills vs those given a placebo. The hypothesis could not be tested and the results could not be appropriately understood in the absence of an experimental group.
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to find the order of a reaction with respect to one reactant, you will monitor the
Answer:
hydrogen + oxygen is equal to water Potassium Chloride + oxygen there are reaction
the term for the branch of science that studies atoms is
The branch of physics known as "atomic physics" focuses on the study of atoms as self-contained systems made up of electrons and nuclei.
In general, the term "atomic physics" refers to the study of the structure of atoms and the interactions between atoms. The arrangement of electrons around the nucleus and the mechanisms by which this arrangement changes are major topics of interest. Unless specifically stated to consist of ions and neutral atoms, the term "atom" is meant to include ions.
Atomic physics is a term that can refer to nuclear energy and nuclear weapons.
Atomic physics, which treats an atom as a system consisting of a nucleus and electrons, differs from nuclear physics, which studies nuclear reactions and the unique properties of atomic nuclei.
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The student weighed the dry tablet before the reaction and found its mass to be 3.98 grams. Using the mass of the tablet that remained (438g) what was the mass of gas released?
The mass of the gas released is 3.98 grams - 438 grams = -434.02 grams.
What is mass?Mass is a measure of the amount of matter present in an object. It is the amount of inertia a body has, meaning it is the measure of the resistance of a body to change in its motion when subjected to an external force. Mass is usually measured in kilograms, grams, or pounds. Mass is distinct from weight, which is a measure of the force of gravity acting on an object.
This result is negative because the mass of the gas is not actually being weighed, but is instead being calculated by subtracting the mass of the tablet after the reaction from the mass of the tablet before the reaction. The negative result indicates that the mass of the gas released is less than the mass of the tablet before the reaction.
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A cold pack is broken, allowing two chemical substances to mix, making the pack cold. Which statement accurately describes the flow of energy in this reaction?
The reaction in the cold pack is an endothermic reaction
Is the reaction in cold pack endothermic?The question is incomplete but I will explain generally the reaction in a cold pack
The reaction in a cold pack is typically endothermic. Cold packs are designed to absorb heat from their surroundings in order to create a cooling effect. This is achieved through a chemical reaction that takes place inside the pack.
Most cold packs contain two separate compartments, one containing water and the other containing a solid or powdered substance, such as ammonium nitrate. When the pack is activated, the barrier between the two compartments is broken and the water and solid/powdered substance are mixed together. This reaction is typically endothermic, meaning it absorbs heat from its surroundings in order to proceed.
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what is the formula for perchloric acid
The formula for perchloric acid is HClO₄.
Perchloric acid is a strong acid that contains one hydrogen atom, one chlorine atom, and four oxygen atoms. Perchloric acid is a highly corrosive and reactive chemical that is used in a variety of industrial processes, such as rocket fuel production, metal etching, and laboratory reagents.
It is also a common oxidizing agent and can be dangerous if handled improperly, as it can react violently with organic materials and other reducing agents.
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calculate the mass of oxygen gas required to occupy a volume of 6 l at a pressure of 20.9 kpa and a temperature of 37◦c.
At a pressure pf 20.9 kpa as well as a temperature near 37 °C, the mass liquid oxygen gas needed to fill a volume od 6 l is 1.56G.
Mass, by what name?It all comes together in the celebration of the Eucharist mass, the main act of worship in the Roman Catholic Church. Ite, missa est, the Latin ecclesiastical expression for the congregation's dismissal, is where the word "mass" originates.
How do mass and volume work?A: An object's volume, which is expressed in cubic units, is the space that it takes up in three dimensions. Both cm3 and in3 are examples of cubic units. The quantity of matter in an item is quantified by its mass, on the other hand. How much is a common way of determining mass.
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Marsupials are a group of mammals that give birth to very immature young and raise them in a pouch. Opossums, kangaroos, and Tasmanian devils are all marsupials. Marsupials are common in Australia and South America. Previously scientists thought marsupials originated in Australia, but new evidence confirmed that all marsupials evolved from a common ancestor in South America. What is the most likely explanation for why marsupials are related in Australia and South America? Group of answer choices A huge asteroid struck Earth and the impact broke the two continents apart. An ice age froze the ocean surface and marsupials migrated to Australia. The continents were once joined into a supercontinent that slowly broke apart. A series of earthquakes and volcanoes separated the two continents.
About 100 million years ago, in South America, marsupials first appeared. Australia, Antarctica, and South America were all connected at the time to form one large continent. Australia and Antarctica gradually separated from South America and developed into independent continents.
Why is marsupials more in Australia than South America ?
The diversity of marsupials is thought to be higher in Australia than in South America because there were no terrestrial placental mammals there in prehistoric Australia to compete with marsupials. The only other large mammal that uses hopping as its main mode of propulsion is the kangaroo.
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Which equation is correct?
A. TC + or - WCA = TH.
B. TH + or - DEV = MH.
C. MH + or - VAR = CH.
The equation that is correct is TC + or - WCA = TH. The correct option is
A.
The given equations are related to the magnetic compass errors.
The full form for the above equation is as follows :
T is the concerning TRUE North it is use to plotter and the latitude
M is Regarding the MAGNETIC North that is the True North +/- Deviation.
C is to the COMPASS North that is the Magnetic North +/- Compass card deviation in the system
C is Plotted COURSE in the map that is no wind correction is applied.
The order is as :
TC = True course
VAR = Variation
MC = Magnetic course
WCA = Wind correction angle
MH = Magnetic heading
DEV = Deviation
CH = Compass heading
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the force of attraction of binding oppositely charged ions together is called?
The force of attraction that binds oppositely charged ions together is called an electrostatic force or an ionic bond.
This type of bond results from the transfer of electrons from one atom to another, resulting in the formation of ions with opposite charges. The positively charged ion (cation) is attracted to the negatively charged ion (anion), and this attraction results in the formation of an ionic bond. Ionic bonds are typically strong and can be found in many types of compounds, including salts and minerals.
The electrostatic force is an important fundamental force in nature and plays a crucial role in many physical and chemical phenomena, such as the binding of atoms to form molecules, the behavior of charged particles in electric and magnetic fields, and the behavior of materials with electrical conductivity.
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f the reactants of a chemical reaction contain three total carbon atoms, what must be true of the products?
If the reactants of a chemical reaction contain three total carbon atoms the products of the chemical equation will have 3 carbon atoms.
Since matter cannot be created or destroyed, the rule of conservation of mass states that no matter is synthesized or degraded during a chemical reaction. It is only transformable.
As a result, atoms are preserved in chemical reactions. This means that the elements that are forming a compound in a specific ratio will reorganize to create new compounds with the same number and kind of atoms as the reactants.
In conclusion, if a molecular equation's reactants contain 3 carbon atoms, 6 oxygen atoms, and 4 hydrogen atoms, its products will also contain 3 carbon atoms, 6 oxygen atoms, and 4 hydrogen atoms.
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The complete question is:
If the reactants of a chemical equation have 3 carbon atoms, 6 oxygen atoms, and 4 hydrogen atoms. In order to follow the conservation of matter, the products of the chemical equation will have
Mass (g) to mass (g)
2Na + 2H2O >2NaOH+ H2
How many moles of NaOH are produced if 120 grams of H2O are available?
Answer:
4.44 g
Explanation:
First, we need to determine the limiting reactant. The balanced chemical equation is:
2Na + 2H2O → 2NaOH + H2
From the equation, we see that 2 moles of sodium reacts with 2 moles of water to produce 1 mole of hydrogen.
Moles of Na in 120 g of Na:
Molar mass of Na = 22.99 g/mol
Number of moles of Na = mass/molar mass = 120 g / 22.99 g/mol = 5.22 mol
Moles of water in 80 g of H2O:
Molar mass of H2O = 18.02 g/mol
Number of moles of H2O = mass/molar mass = 80 g / 18.02 g/mol = 4.44 mol
Since 5.22 moles of Na requires 5.22 moles of H2O, water is the limiting reactant.
The moles of hydrogen produced is equal to the moles of the limiting reactant, which is 4.44 mol.
The mass of hydrogen produced is:
Mass = number of moles x molar mass
Mass = 4.44 mol x 1 g/mol = 4.44 g
So the grams of hydrogen produced by the 120 grams Na and 80 grams of water is 4.44 grams.
how many grams of co are needed to reaxt with an excess of fe2O3