Calculate the formula mass for the compound nitrous acid.

Express your answer using four significant figures.

47.01g/mol

Explanation:

The formula of Nitrous acid is HNO₂:

The formula mass of a compound gives the sum of the atomic masses of the elements that makes up a compound.

Atomic mass of H = 1.0079g/mol

N = 14.0067g/mol

O = 15.9994g/mol

Formula mass of HNO₂ = 1.0079 + 14.0067 + 2 (15.9994)

= 1.0079 + 14.0067 + 31.9988

= 47.01g/mol