Answer:
0.93 atm is the total pressure for the mixture
Explanation:
In a mixture of gases, we can apply the Ideal Gases Law to determine the total pressure.
Total pressure . V = Total moles . R. T
Let's find out the total moles. Therefore, we must convert the mass to moles:
0.4 g / 2 g/mol = 0.200 mol
2 g / 28g/mol = 0.0714 mol
10.5 g / 44g/mol = 0.238 mol
Total moles = 0.200 + 0.143 + 0.0714 → 0.4144 moles
We replace the data to the formula
Total pressure . 10L = 0.4144 moles . 0.082 L.atm/mol.K . 273K
Total pressure = (0.4144 moles . 0.082 L.atm/mol.K . 273K) / 10L
Total pressure = 0.93 atm
