Question

in a gas mixture of composed of n2,Ne and He, the partial pressure of n2 is 0.50 atm that of Ne is 1.1atm ,and the the total pressure is 2.4 atm. What is the partial pressure of He?

Answer 1

$P_{total} = P_{N_2} + P_{Ne} + P_{He} \\ 2.4 = 0.5 + 1.1 + P_{He} \\ P_{He} = 0.8 \; atm$