Multiple choice

A box contains one gram hydrogen gas, four grams helium gas, seven grams nitrogen gas and eight grams of oxygen gas. Which of the gas will have high partial pressure?

  1. Hydrogen gas

  2. Oxygen gas

  3. Helium gas

  4. Nitrogen gas

  5. All of them exerts equal pressure.

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pressure is directly proportional to moles of gases.  4 grams of He = 1 mole of He gas (weight/molar weight); highest among all. Molecular weight of Helium gas is 4.