gas pressure

Question

A mixture of four gases exerts a total pressure of 975 mm Hg. Gases A and B each exert 220 mm Hg. Gas C exerts 110 mm Hg. What pressure is exerted by gas D?

Answer 1

Hi Lindsey,

 

P_Total=975 mmHg,  P_A = 220 mmHg, P_B = 220mmHg, P_C = 110mmHg, P_D = ?

 

P_Total = P_A + P_B + P_C + P_D

975  = 220 + 220 + 110 +P_D

975  =550 + P_D

P_D = 450mmHg