How many moles of NH_3 are there in 77.5 g of NH_3?

1 Answer
Meave60
Dec 11, 2015

There are "4.55 moles" in "77.5 g NH"_3".

Explanation:

Divide the given mass of "NH"_3" by its molar mass.

Molar mass of "NH"_3":"17.03052 g/mol"http://pubchem.ncbi.nlm.nih.gov/compound/222#section=Top

(77.5cancel"g NH"_3)xx(1"mol NH"_3)/(17.03052cancel"g NH"_3)="4.55 mol NH"_3""

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