ICSE Class 10 Chemistry 2014 Solved Paper

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

Question : 74 of 88

Marks: +1, -0

How many molecules of ammonia are present in the cylinder?

[N-14, H-1]

Solution:

One mole of

{\NH}_3

contains

\;=6.022 × 10^{23} \;\text " molecules "\;

∴ \;\; 4 \;\text " moles of "\; {\NH}_3 \;\text " contains "\;

\;=4 × 6.022 × 10^{23}

\;=2.4088 × 10^{24} \;\text " molecules. "\;

Go to Question:

Prev Question

Next Question