What is the number of moles in 15.0 g AsH3?

Question

Saunders

Chemistry

14 August, 19:24

What is the number of moles in 15.0 g AsH3?

+2

Answers (1)

Know the Answer?

Alexis Miller · Answer 1

0.192 mol.

Explanation:

To calculate the no. of moles of a substance (n), we use the relation:

n = mass / molar mass.

mass of AsH₃ = 15.0 g.

molar mass of AsH₃ = 77.95 g/mol.

∴ The number of moles in 15.0 g AsH₃ = mass / molar mass = (15.0 g) / (77.95 g/mol) = 0.192 mol.