Question

Number of atoms of $He$ in $100$ amu of $He$ is :-

• A. $25$
• B. $100$
• C. $50$
• D. $100\times 6\times 10^{- 23}$

Answer 1

Answer: (A)

Number of atom $=\frac{W}{\text{ mass of } 1 \text{ atom }}$