Question

Calculate the mass of oxygen in 2.2 litres of CO2 at STP.​

Answer 1

Answer:

3.14 g

Explanation:

Mass of oxygen in 22.4 litres =32 g

so mass of oxygen in 2.2 litres is

=2.2×32/22.4

=3.14g

Answer 2

Molar mass of CO2 = 44g

Given 1 mole = molar mass = 22.4 L at stp

22.4 L = 44g

2.2 L = (44/22.4) * 2.2 = 4.3g