## MCAT Question A Day - 3/10/14 - Answer!

**A gas mixture containing 1 mole of H**

_{2}and 3 moles of N_{2}has a total pressure of P atm. Which of the following are the partial pressures of each gas?

**A.**N

_{2}: 3 atm; H

_{2}: 1 atm

**B.**N

_{2}: (2P/3) atm; H

_{2}: (P/3) atm

**C.**N

_{2}: (P/3) atm; H

_{2}: (2P/3) atm

**D.**N

_{2}: (3P/4) atm; H

_{2}: (P/4) atm

*The correct answer is (D). Use P*

_{i}= X_{i}PT where X(N_{2}) = 3/(3 + 1) and X(H_{2}) = 1/(3 + 1).*Want more questions? - Click here to check out our MCAT Question A Day archive*