Question

3) What will be the molecular mass of gas,11.2l of which at NTP weight 14 gm? ​

Answer 1

30 g/mol

Step-by-step explanation:

Step 1: Given data

• Volume of the gas at NTP: 11.2 L

• Mass of the gas: 14 g

Step 2: Calculate the moles corresponding to 11.2 L of gas

At normal temperature and pressure (1 atm, 293.15 K), 1 mol of a gas has a volume of 24.05 L.

11.2 L × 1 mol/24.05 L = 0.466 mol

Step 3: Calculate the molecular mass of the gas

0.466 moles of the gas weigh 14 g. The molecular mass is:

M = 14 g/0.466 mol = 30 g/mol