Given:
m = 22g
M.V = 22.4dm3
V = ?
First, calculate the number of moles n, by dividing mass of CO2 by the molar mass of CO2, since n =
Molar mass of CO2 = 12 + (2 x 16) = 44g/mol
So, n =
n = = 0.5 mole
Also recall that number of moles of gases, n =
n =
0.5 =
V = 0.5 X 22.4
V = 11.2 dm3
Alternatively,
Given the mass of CO2 = 22g
Molar mass of CO2 = 12 + (16X2) = 44g
number of moles, n = = = 0.5 mole.
If 1 mole of CO2 = 22.4dm3
0.5 mole of CO2 = X dm3
X = 0.5 x 22.4 = 11.2 dm3