Two flask were connected by a narrow glass tube with a closed tap. One flask contained 300cm^3 of oxygen at 1.0x10^5Nm^-2 while the 200cm^3 of notrogen at 2.0x10^5Nm^-2.After opening the tap, calculate the

Question

(a)partial pressure of each gas.
(b)total pressure of the mixture at constant temperature.?

Answer 1

PV = nRT. Since R is constant and T is constant, then PV = nk and since T doesn't change then k stays the same so for this problem we can write PV = n (basically we are calling k = 1) and n = PV.
1st flask = n = 1E5*0.3 = 0.3E5
2nd flask = n = 2E5*0.2 = 0.4E5
Total n = 0.7E5
Total P = n/V = 0.7E5/0.5 = ? N/m^2
partial pressure of each is n/V = ?
Post your work if you get stuck.