Question

The number of molecules in 8.96 litre of a gas at 0°C and 1 atmospheric pressure is approximately

(a) 6.02 × 10²³

(b) 12.04 × 10²³

(c) 18.06 × 10²³

(d) 24.08 × 10²²

Answer 1

Correct option is (d) 24.08 × 10²²

No. of molecules in 8.96 l of a gas at STP = \(\frac{6.02 \times 10^{23} \times 8.96}{22.4}\)

\(= 2.408 \times 10^{23}\)

\(= 24 . 0 8 \times 10^{22}\)