Answer:
3.67 atm
Explanation:
Because the gases are not reacting and the temperature remaining the same, we can apply Boyle's Law:
P1V1 = P2V2
Where P is the pressure, V is the volume, 1 is the initial state, and 2 the final state.
For a mixture of gases, from Dalton's law, the total pressure is the sum of the partial pressures of the components, so:
P1V1 = PHe*Ve + PNe*VNe
PHe*Ve + PNe*VNe = P2*V2
5.6*3.0 + 3.6*4.5 = P2*9
9P2 = 33
P2 = 3.67 atm
