ICSE Class 10 Chemistry 2014 Solved Paper

A cylinder contains $68 {\g}$ of ammonia gas at s.t.p.

Question : 73 of 88

Marks: +1, -0

How many moles of ammonia are present in the cylinder?

Solution:

No. of moles

=\;{\;\text " Mass in gm "\;}/{\;\text " Gram molecular mass "\;}

\;=\;{68}/{17}=4 \;\text " moles. "\;

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