What is the mole fraction of chlorine gas, Cl2, if 2.50 mol of the poisonous gas is mixed with 1.80 mol of He and 3.00 mol of Ar
To find the mole fraction of chlorine gas, Cl2, we first need to calculate the total moles of all gases present:
Total moles = 2.50 mol Cl2 + 1.80 mol He + 3.00 mol Ar
Total moles = 2.50 + 1.80 + 3.00 = 7.30 mol
Next, we can calculate the mole fraction of Cl2 by dividing the moles of Cl2 by the total moles:
Mole fraction of Cl2 = Moles of Cl2 / Total moles
Mole fraction of Cl2 = 2.50 mol / 7.30 mol
Mole fraction of Cl2 ≈ 0.342
Therefore, the mole fraction of Cl2 in the mixture is approximately 0.342.