How many moles of ammonia are present in the ...

ICSE Class 10 Chemistry 2014 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

= \frac{\text{Mass in gm}}{\text{Gram molecular mass}}

= \frac{68}{17}=4 \text{ moles.}

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