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zimovet [89]
2 years ago
15

Which of the following lists includes only molecules?

Chemistry
1 answer:
riadik2000 [5.3K]2 years ago
5 0
The only list containing molecules is list #4

NaCl, N2, and H2O are all made up of more than one element, making them molecules. The other lists contain an element. Mg, He, and Fe are elements, not molecules.

Hope this helps!
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Write the balanced chemical equation for the following: The destruction of a marble statuary by acid rain: aqueous nitric acid r
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Answer: The coefficient in front of nitric acid is 2

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas. Liquids are represented by (l) and gases are represented by (g).

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A phosphate buffer is involved in the formation of urine. The developing urine contains H2PO4 and HPO42- in the same concentrati
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Answer:

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Explanation:

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In the body H2CO3 is a more optimal buffer for regulating pH due to the combination of the two acid-base equilibriums and the two pKa.

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