Calculate the molar mass of each if the following
a. hydrogen fluoride
b. ammonia
c nitric acid
d. silver sulfate
plz I need it in about 10 minutes. 5+3 points

A. 20.01 g/mol

B. 18.05 g/mol

C. 63.02 g/mol

D. 311.8 g/mol

Explanation:

First what is molar mass? It's the mass per mole of a substance, and we add up the atomic masses of all the elements that make up the substance to get the entire substance's molar mass. To find the atomic masses, we simply use the periodic table.

A. Hydrogen Fluoride (HF)

The atomic mass of H is 1.01 and the atomic mass of F is 18.998, so add these together:

1.01 + 18.998 ≈ 20.01 g/mol

B. Ammonia ()

The atomic mass of N is 14.01 and the atomic mass of H is 1.01. Since there are 4 H's, we multiply 1.01 by 4:

14.01 + 1.01 * 4 = 18.05 g/mol

C. Nitric Acid ()

The atomic mass of H is 1.01, of N is 14.01, and of O is 16. There are 3 O's, so multiply 16 by 3:

1.01 + 14.01 + 16 * 3 = 63.02 g/mol

D. Silver Sulfate ()

The atomic mass of Ag is 107.87, of S is 32.06, and of O is 16. Again, there are 2 Ag's so multiply 107.87 by 2 and there are 4 O's so multiply 16 by 4:

107.87 * 2 + 32.06 + 16 * 4 = 311.8 g/mol

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