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viktelen [127]
2 years ago
12

What is the number of moles in 15.0 g AsH3?

Chemistry
1 answer:
Grace [21]2 years ago
7 0

Answer:

0.192 mol.

Explanation:

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

<em>n = mass / molar mass.</em>

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.

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