Question

Find out gram molecular weight of 6 moles of Ammonia Gas ?


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Answer 1

Answer:

1 mole ammonia = 1 gram molecular weight

then for 6 moles ,

multiply both sides by 6,

therefore, 6 mol NH3 = 6 gram molecular weight

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Answer 2

The atomic masses of N and H are 14 g/mol and 1 g/mol respectively. The molecular weight of ammonia is 14+3(1)=17 g/mol.

Convert unit from g to kg

17 g/mol×

1000 g

1 kg

=0.017 kg/mol

1 mole of ammonia weighs 0.017 kg and contains Avogadro's number ( 6.023×10

23

) of molecules.

Molecular mass of an ammonia molecule =

6.023 ×10

23

molecules/mol

0.017 kg/mol

=2.82×10

−26

kg