Electrolytes: sodium chloride, potassium iodide, sodium hydroxide.
Nonelectrolytes: table sugar, methanol, and most molecular solutes.
Sodium chloride and potassium iodide are electrolytes because they are soluble ionic compounds that dissociate into ions in solution, allowing them to conduct electricity. Sodium hydroxide is also an electrolyte for the same reason.
Table sugar and methanol are nonelectrolytes because they do not dissociate into ions in solution, meaning they do not conduct electricity.
Overall, the classification of a substance as an electrolyte or nonelectrolyte depends on its ability to dissociate into ions in solution. Electrolytes dissociate into ions, allowing them to conduct electricity, while nonelectrolytes do not dissociate into ions and do not conduct electricity in solution.
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--The complete question is, Classify each of the following substances and descriptions as an electrolyte or a nonelectrolyte.
-most molecular solutes
-sodium chloride, NaCl
-potassium iodine, KI
-table sugar
-methanol, CH3OH
-sodium hydroxide, NaOH
-a substance that forms an aqueous solution that does not conduct electricity
-a soluble ionic compound--
Identify the correct statements about GPCR and/or G-proteins. Choose all that apply. • G-protein cannot interact productively with GPCR in the absence of ligand binding to the GPCR.• When an activated G-protein separates into the a subunit and the B/ydimer, only the a subunit initiates a transduction pathway leading to a cellular response • The subunit of a G-protein has a nucleotide binding site that is occupied by GOP When the G-protein is in an inactive state • An activated G-protein ka transmembrane protein complex
The correct statements about GPCR and/or G-proteins are: When an activated G-protein separates into the a subunit and the B/y dimer, only the a subunit initiates a transduction pathway. A subunit of G-protein has a nucleotide binding site which is occupied by GDP when the G-protein is in an inactive state. Option B and C is correct.
G-proteins are a family of proteins involved in transmitting signals from extracellular stimuli to intracellular effectors. They are activated by G protein-coupled receptors (GPCRs), which are integral membrane proteins that detect various signaling molecules such as hormones and neurotransmitters.
When a signaling molecule binds to a GPCR, the receptor changes conformation and interacts with a G protein, leading to the activation of the G protein.
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--The given question is incomplete, the complete question is
"Identify the correct statements about GPCR and/or G-proteins. Choose all that apply. A) G-protein cannot interact productively with GPCR in the absence of ligand binding to the GPCR. B) When an activated G-protein separates into the a subunit and the B/y dimer, only the a subunit initiates a transduction pathway leading to a cellular response. C) The a subunit of a G-protein has a nucleotide binding site that is occupied by GDP when the G-protein is in an inactive state. D) An activated G-protein is a transmembrane protein complex."--
Why is the mantle of the earth described as semi-solid?
A. the mantle is solid toward the crust and liquid toward the outer core
B. the mantle is so hot that it allows the rocky material to flow gradually
C. the mantle is composed of some solid pockets and some liquid pockets
D. the mantel is liquid during warmer months and solid during colder months.
Please explain why your answer is correct.
Apart from the outer core, the magma is solid and liquid, respectively. The heat and pressure of the asthenosphere cause rocks to weaken & partially melt in crust, forming semi-molten.
What is the crust like?The shifting geology of a Earth's crust is explained by plate tectonics. The mantle, which sits below the crust, is largely made up of hard minerals and rocks, though it does occasionally contain semi-solid magma. The Earth's interior is made up of a hot, solid metal core.
What is a magma like?Magma, which is found beneath the surface of the Earth, is a very hot semi-liquid and liquid rock. Its inner core, outer core, mantle, & crust make up Earth's stratified structure. The majority of a planet's mantle is composed of magma.
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How many liters of co2 are produced when 15.0 liters of o2 are consumed
Answer:At STP, a mole of gas takes up 22.4 liters.
(This information can be deducted from ideal gas law)
So 15 liters correspond to x moles:
22.4 —- 1 mole
15 —- x
x = 0.67 moles
The complete combustion is the reaction:
CH4 (for example) + 2 O2 -> CO2 + 2 H2O
it is the same than
1/2 CH4 + O2 -> 1/2 CO2 + H2O
So the dioxide carbon producted will be 0.67/2 moles. Or, it will be 15/2 = 7.5 liters.
Notice that I used CH4 but I might used any organic compound instead. I used CH4 to be more pratical resulting 1 carbon atom in each side of the chemical equation.
Explanation:
Directions: The following question(s) refer to the diagram below, which shows 100mL of water being poured through a soil sample. After the water has passed through the soil, 98mL of water is measured in the collection tray below the sample.
(picture showing water being poured into a soil mixture and exiting into a collection tray)
Of the following, which is the most likely composition of the soil sample?
10%, 10%, 80% of Clay, Silt and Sand are the composition of the soil sample. Therefore, the correct option is option E.
What is soil?The mixture of organic materials, minerals, gases, fluids, and living things that makes up soil—also alluded to as earth or dirt—supports life. Some scientific definitions differentiate between soil and dirt by limiting the former word to just displaced soil.
100 ml of water being poured through a soil sample. After the water has passed through the soil, 98 ml of water is measured in the collection tray below the sample. 10%, 10%, 80% of Clay, Silt and Sand are the composition of the soil sample.
Therefore, the correct option is option E.
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Your question is incomplete but most probably your full question was,
Directions: The following question(s) refer to the diagram below, which shows 100 ml of water being poured through a soil sample. After the water has passed through the soil, 98 ml of water is measured in the collection tray below the sample. Of the following, which is the most likely composition of the soil sample?
A. ClaySiltSand80%10%10%
B.ClaySiltSand50%40%10%
C. ClaySiltSand40%50%10%
D.ClaySiltSand30%40%30%
E.ClaySiltSand10%10%80%
Sodium (Na) and water(H₂O) undergo a chemical reaction the produces sodium hydroxide (NaOH) and hydrogen gas (H₂). Which equation represents this chemical reaction?
Sodium (Na) and the water(H₂O) undergo a chemical reaction the produces sodium hydroxide (NaOH) and hydrogen gas (H₂). The equation is :
2Na(s) + 2H₂O(l) → 2NaOH(aq) +H₂(g) . The correct option is A.
The Sodium (Na) and the water (H₂O) will undergo the chemical reaction they produces the sodium hydroxide (NaOH) and the hydrogen gas (H₂). The chemical equation is as follows :
Na(s) + H₂O(l) → NaOH(aq) +H₂(g)
The balance chemical equation is the equation in which the atoms of the reactant and the product side are equal. Multiply 2 in Na , in H₂O and in NaOH, we get :
2Na(s) + 2H₂O(l) → 2NaOH(aq) +H₂(g)
Thus, option A is correct.
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This question is incomplete, the complete question is :
Sodium (Na) and water(H₂O) undergo a chemical reaction the produces sodium hydroxide (NaOH) and hydrogen gas (H₂). Which equation represents this chemical reaction?
A. 2Na + 2H₂O ---> 2NaOH + H₂
B. 2Na+ H₂ ---> 2NaOH + 2H₂O
C. 2Na + 2NaOH ----> 2H₂O + H₂
D. H₂ + 2H₂O ----> 2Na + 2NaOH
what are the units for the rate constant, k, for a second-order reaction?
a. k=Lmol−1s−1.
b. reciprocal seconds (s−¹)
c. M/s
d. mol dm−³ s−¹
the units for the rate constant, k, for a second-order reaction is:
k = L. mol⁻¹. s⁻¹
correct option: a
What is second-order reaction?A word used to describe the rate of a chemical reaction when the rate is proportional to the product of the concentrations (in moles) of two of the reactants, as well as the square of the molar concentration of such reactant if there is only one, is called as bi-molecular kinetics. Second-order reaction rates are inversely correlated with the square of a reactant's concentration or the product of the concentrations of two reactants.
Nitrogen dioxide creates nitrogen monoxide and oxygen as an example of a second-order process.
Correct option: a
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term for the negatively charged subatomic particle is called?
The term for the negatively charged subatomic particle is called as electrons.
There are the three subatomic particles that are the protons, the neutrons and the electrons. Two of the subatomic particles have the electrical charges. The protons have the positive charge while the electrons have the negative charge.
An electron which is bound to the atom is the one of the three primary types of the particles within the atom . Together, the electrons, the protons and the neutrons form the nucleus of the atom. Electrons belong to first generation in the lepton particle family. The electrons is the fundamental or the elementary particles.
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Draw the lewis structure.
Label the molecule with - and + if applicable.
Draw the molecule 2 more times so that the molecules are correctly oriented based on the partial charges (if applicable). You should have 3 total molecules.
With a dashed line (----) show how this molecule would interact. (connect partial positive to partial negative)
Identify the type/s of intramolecular forces.
For SI2 & NH3
The Lewis structures of SI₂ and NH₃ are attached in the images as attachments.
What are Lewis structures?Lewis structures are also called as electron dot structures and can be drawn if the molecular formula of a compound is known. It provides information regarding the nature of bond and the position of atoms .
They are also capable of exhibiting the lone pair if any present in a molecule or compound.Lewis defined a base to be an electron pair donor and an acid to be an electron pair acceptor.
They are capable of reflecting electronic structure of elements and even the pairing of electrons . In the diagram, each dot represents an electron while a pair of dots represent a bond between the atoms.
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A compound has a emperical formula CH2 its Mr is28 find its molecular formula
Answer:
The molecular formula of the compound with an empirical formula of CH2 and a molar mass of 28 would be C2H4.
Do all molecules have resonance structures?
Not all molecules have resonance structures. Resonance occurs when a molecule has two or more equivalent Lewis structures that differ only in the placement of electrons.
This phenomenon is common in molecules that have conjugated pi systems, such as benzene and other aromatic compounds, where the delocalization of electrons can lead to multiple equivalent structures. However, not all molecules have this type of electron delocalization, and therefore do not exhibit resonance. Molecules that do not have resonance structures may have only one valid Lewis structure or multiple non-equivalent structures. The presence or absence of resonance in a molecule depends on its electronic configuration, molecular geometry, and bonding characteristics.
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Which of these molecules would be soluble in water?
It is challenging to determine which molecules might be soluble in water without knowing the precise compounds in question. To forecast solubility, there are some generic rules that can be employed.
A substance's capacity to dissolve in a specific solvent, such as water, is referred to as being soluble in chemistry. A chemical that is soluble in a specific solvent can combine uniformly with the solvent to create a clear, transparent solution. The polarity of the solvent and the material, temperature, and pressure are only a few examples of the variables that might affect how soluble something is. Chemistry places a lot of emphasis on the notion of solubility because it affects numerous chemical processes and reactions as well as many substances' features and behaviour.
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What shape is a prism?
Explanation:
A prism is a solid geometric figure with two identical parallel bases that are both polygons, and the lateral faces are parallelograms with pairs of opposite sides of equal length.
One calorie is the heat energy required to raise the temperature of 1 g of water from _________.A. 10∘C to 100∘CB. 1∘C to 10∘CC. 14.5∘C to 15.5∘CD. any initial to any final temperature
Answer:
1degree celcius is my answer
Hydrogen is used as a rocket fuel because it is very light and reacts explosively and completely with oxygen. For the combustion reaction 2H2(g) + O2(g) = 2H2O(g) what is the likely magnitude of the equilibrium constant K? View Available Hint(s) a.K < 10-3 b.10-3 103
The likely magnitude of the equilibrium constant K is greater than 10^3, and answer (b) is the most appropriate choice.The equilibrium constant K for the combustion reaction 2H2(g) + O2(g) = 2H2O(g) is likely to be very large, indicating a strong preference for the products at equilibrium.
This is because the reaction involves the formation of strong covalent bonds between the hydrogen and oxygen atoms, releasing a large amount of energy in the form of heat and light. The combustion reaction also involves the conversion of two moles of hydrogen gas and one mole of oxygen gas into two moles of water vapor, which means that the number of moles of gas decreases, leading to a decrease in entropy. Despite this decrease in entropy, the exothermic nature of the reaction is likely to drive the equilibrium towards the products. Therefore, the likely magnitude of the equilibrium constant K is greater than 10^3, and answer (b) is the most appropriate choice.
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Which of these properties of an unknown liquid can be found using a beaker, a hot plate, and a temperature probe?A. Oxygen levelB. Chemical compositionC. Boiling pointD. Density
How do you know if a reaction increases entropy?
The entropy of a reaction generally increases when the total number of product molecules is more than the total number of reactant molecules.
Generally entropy is defined as the measure of a system's thermal energy per unit temperature which is unavailable for doing useful work. As work is obtained from ordered molecular motion so, the amount of entropy is also a measure of the molecular disorder, or randomness, of a system.
Generally, entropy increases in reactions in which the total number of product molecules is greater than the total number of reactant molecules. But there is also an exception to this rule, when a gas is produced from nongaseous reactants.
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what is the carbon lewis dot structure?
Lewis dot structures, electron "."structures, are diagrams that depict both the interactions of atoms within a molecule and any lone pairs of electrons that may be present. There will be four dots surrounding the letter C, which stands for carbon.
The electrons in their valence shells can be shared or transferred when atoms come together to form compounds. Lewis . structures were used as tents.
Each of the four valence electrons is represented as a . in the Lewis symbol for carbon.
This displays the carbon letter C with four dots surrounding it. The four dots stand for the four electrons that make up carbon's valence shell. The 2s and 2p orbitals are home to these electrons.
The electrons added to or subtracted from the Lewis dot diagram when the atom is an ion are equal to the charge's magnitude. An anion (negative charge) has electrons added to it, whereas a cation (positive charge) has electrons subtracted.
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QuestionWhich pair of quantum numbers determine the energy of an electron in an orbital?An and lBn and mCn and msDl and m
The right response is A) n and l.
Quantum numbers are the number sequence used to express the location and energy of an electron within an atom. The principal, azimuthal, magnetic, and spin quantum numbers are the four different types of quantum numbers.
All the characteristics of a given electron in an atom can be fully summed up using the following four quantum numbers:
1. The n-th principal quantum number.
2. The l symbol stands for the azimuthal quantum number, also known as the orbital angular momentum quantum number.
3. The ml magnetic quantum number.
4. The ms symbol for the electron spin quantum number.
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Which formula represents an unsaturated hydrocarbon? A) CnH2n– 6. B) CnH2n– 2. C) CnH2n. D) CnH2n+ 2
The formula that represents an unsaturated hydrocarbon is CnH₂n– 2 . Option B is correct.
Unsaturated hydrocarbons contain at least one carbon-carbon double or triple bond, which means they have fewer hydrogen atoms compared to saturated hydrocarbons with the same number of carbon atoms. The general formula for an alkene, which is a type of unsaturated hydrocarbon, is CnH₂n, while the general formula for an alkyne is CnH₂n– 2 .
Unsaturated hydrocarbons are more reactive than their saturated counterparts, and they can undergo addition reactions to form new compounds. They are also important in the synthesis of a variety of chemicals and materials, including plastics, synthetic rubber, and solvents.
Hence, B. CnH₂n– 2 is the correct option.
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What are molecules vs compounds examples?
Molecules and compounds are both made up of atoms, but they have different definitions and characteristics. Examples of molecules include oxygen, water, whereas for NaCl is a compound.
Molecules are groups of two or more atoms that are chemically bonded together. Examples of molecules include oxygen, water, and carbon dioxide. Molecules can be made up of atoms of the same element or different elements.
Compounds are a type of molecule that are made up of two or more different elements that are chemically bonded together in a fixed ratio. Examples of compounds include sodium chloride, methane, and sucrose.
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which process would be directly affected by a substance that interrupts rna polymerases?
The process that would be directly affected by a substance that interrupts RNA polymerases is protein synthesis.
What is the function of RNA polymerases?RNA polymerases are enzymes responsible for catalyzing the formation of RNA molecules from DNA templates during transcription. A substance that interrupts RNA polymerases would directly affect the transcription process, which is the synthesis of RNA from DNA.
Transcription is a fundamental process in gene expression, where information encoded in DNA is transferred to RNA for the synthesis of proteins.
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what are ch3cooh lewis structure
Three C-H bonds, one C=O bond, one C-O bond, one O-H bond, and one C-C bond make up the Lewis structure of acetic acid ([tex]CH_3COOH[/tex]) (See Picture). There are two lone pairs on each oxygen atom.
Each carbon atom in this structure is linked to three other atoms, two of which are hydrogen and one of which is oxygen. Also joined to a hydrogen atom is the oxygen atom on the right side of the molecule. Together with a double bond with the carbon atom in the centre, the other oxygen atom is connected to the carbon atom on the left side of the molecule. The oxygen atom in the centre of the molecule, which is bound to the carbon atom, likewise has two lone pairs of electrons.
Acetic acid, often known as [tex]CH_3COOH[/tex], has the Lewis structure shown in the given picture(See Picture).
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what is chlorine periodic table?
Chlorine is an atomic number 17 chemical element with the symbol Cl. It belongs to the halogen group and is found in the periodic table's third row, or period, and second column.
or group 17. (also known as the "halogen group" or "halogens"). Other elements in the halogen group include fluorine, bromine, iodine, and astatine, which have comparable chemical features such as strong electronegativity and reactivity. At room temperature, chlorine is a yellow-green gas that is a powerful oxidizing agent that may react with a wide range of other elements and compounds. It is frequently used in water treatment, disinfection, and the manufacturing of chemicals like as solvents, insecticides, and polymers.
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What is the formula name for chlorous acid?
The formula for chlorous acid is HClO2. Chlorous acid is a weak acid with the chemical formula HClO2.
It is an oxyacid, meaning that it contains hydrogen, oxygen, and another element, in this case, chlorine. Chlorous acid is a colorless, unstable, and highly reactive compound, and it can decompose to form other chlorinated species, such as chlorine dioxide (ClO2) and hydrochloric acid (HCl). Chlorous acid can be prepared by reacting chlorine dioxide with water or by adding acid to a chlorite salt. It is used as a bleaching agent, disinfectant, and herbicide. Although the acid is difficult to obtain in pure substance, the conjugate base, chlorite, derived from this acid is stable. One example of a salt of this anion is the well-known sodium chlorite. This and related salts are sometimes used in the production of chlorine dioxide.
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do all molecular structures have at least one imaginary frequency
All molecular structures have at least one imaginary frequency.
A molecule's vibrational frequencies are quantized, or can only take on specific discrete values, according to quantum physics. A molecule is said to be stiff if it contains fewer than three atoms because there are no degrees of freedom for vibration.
A molecule has degrees of freedom for vibration when it has three or more atoms, and it can absorb or emit energy in the form of photons that match these vibrational frequencies.
For becoming real, a molecule needs all its vibrational frequencies. or to match the molecule's true vibrational motions, in order to have a stable geometry.
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name three chemical reactions in which heat is evolved and three chemical reactions in which heat is absorbed.
Answer: Exothermic: combustion, condensation, neutralization. Endothermic: photosynthesis, evaporation, ionic dissociation of salts
Explanation:
how do the names of molecular compounds differ from ionic
Answer:
Ionic: Cation is named first followed by the anion. If it's an ionic compound with a transition metal, there are more than one possible ion. Molecular - named with the least electronegative ion first + prefixes are given to both ions to indicate number of atoms in each element.
Explanation:
what is the molecular formula of iron ii oxide?
The molecular formula of iron (II) oxide is FeO.
Generally, the molecular formula is defined as an expression which defines the number of atoms of each element present in one molecule of a compound. Molecular formula shows the actual number of each atom in a molecule. Let's see an example, the molecular formula of propane is C₄H₁₀. In this molecular formula, there are 4 carbon atoms and 10 hydrogen atoms present in the given compound.
FeO is the known as the molecular formula for iron (II) oxide. Because iron generally forms more than one cation, or positive ion, the Roman numeral II is used to differentiate it from the iron (III) cation.
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Write bond angle cl f2
The bond angle for ClF2, which is a linear molecule, is 180 degrees. In other words, the angle between the two Cl-F bonds in ClF2 is 180 degrees.
This is because the two fluorine atoms are located on opposite sides of the central chlorine atom, and the repulsion between the electron pairs associated with the Cl-F bonds causes them to be oriented as far apart as possible, resulting in a linear geometry. ClF2 is a chemical formula representing a molecule of chlorine difluoride. It consists of one chlorine atom and two fluorine atoms, with the chlorine atom in the center. The molecule has a linear geometry, with a bond angle of 180 degrees, as the two fluorine atoms are located on opposite sides of the central chlorine atom. Chlorine difluoride is a reactive and toxic gas, and it is primarily used as a fluorinating agent in organic chemistry. It can also be used as a rocket propellant and as a disinfectant. Due to its hazardous properties, it must be handled with caution and under appropriate safety conditions.
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which electrophile is used to make acetophenone from benzene?
The electrophile that is used to make the acetophenone from the benzene is the CH₃CO⁺.
The Acetophenone is the carbonyl compound in which the the group called as the ketone group is attached directly to the benzene ring. The catalyst that is used in the production of the acetophenone is the anhydrous aluminum chloride. This type of the reaction is a type of the electrophilic substitution reaction. The Electrophiles are the electron-deficient species and that are attracted to the electron - rich center. The electrophiles will accepts the electron pair.
The electrophile is CH₃CO⁺ that is used in the production of the acetophenone from benzene.
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