Question

Calculate the number of molecules in 22.4 litres of CH4 gas at NTP.

Answer 1

Answer:

N = 8.0695*10^23 molecules. Therefore there is 8.0695*10^23 in 30L of methane(CH4). Originally Answered: How many molecules are in 30 liters of methane (CH4) at STP? We know that 1 mole of any substance contains exactly 22.7 liter of the volume at STP ( standard temperature and pressure) .

Answer 2

Answer:

The number of molecules in 22.4 litres of $CH_{4}$ gas at NTP is $6.02\times 10^{23}$.

Explanation:

Given 22.4 litres of $CH_{4}$ gas at NTP.

At NTP, 1 mole of a gas occupies a volume of 22.4 L

Therefore, 22.4 L of $CH_{4}$  = 1 mole of $CH_{4}$

The total number of molecules contained in 22.4 litres of any gas at NTP is equal to Avogadro's number $\big(=6.02\times 10^{23} mol^{-1}\big)$.

Hence, the number of molecules in 1 mole of $CH_{4}$ gas at NTP is

$1\times 6.02\times 10^{23}$

$= 6.02\times 10^{23}$

Hence, the number of molecules in 22.4 litres of $CH_{4}$ gas at NTP is $6.02\times 10^{23}$.