Question

The numerical value of $N/n$ (where $N$ is number of molecules in a given sample of gas and $n$ is the number of moles of the gas) is:

• A. $8.314$
• B. $6.02\times {10}^{23}$
• C. $0.0821$
• D. $1.62\times {10}^{-24}$

Answer 1

The correct option is B $6.02\times {10}^{23}$

No of molecules $=$ No of moles (n) $\times N_A$

Ratio of $\frac{N}{n}=\frac{n\times N_A}{n}$

$\Rightarrow N_A=6.023\times {10}^{23}$

Hence, option B is correct.