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The atomic mass of N is 14.01 g/mol, and the atomic mass of H is 1.008 g/mol. What is the molecular mass of NH3?

17.034 g/mol
15.018 g/mol
14.12 g/mol
45.054 g/mol

Respuesta :

mperemsky
To solve you need to add the weight of each atom in one mol of the molecule. As there is 1 N and 3 H you need to add

14.01 + 3(1.008) = 17.034 g/mol

Answer:

Option A = 17.03 g/mol

Explanation:

Given data:

Atomic mass of nitrogen = 14.01 g/mol

Atomic mass of hydrogen = 1.008 g/mol

Molecular mass of NH₃ = ?

Explanation:

Molecular mass of NH₃ = (14.01 g/mol × 1) + (1.008 g/mol × 3)

Molecular mass of NH₃ = 14.01 g/mol + 3.024 g/mol

Molecular mass of NH₃ =  17.03 g/mol

Ammonia consist of hydrogen and nitrogen both are nonmetals that's why ammonia is an covalent compound.

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