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JAMB Chemistry 1991 Question 8

Question 8

Gas Laws

A sample of a gas exerts a pressure of 8.2 atm when confined in a 2.93 dm3 container at 20°C. The number of moles of gas in the sample is [R = 0.082 litre atm / deg mole].

  1. A.1.00
  2. B.2.00
  3. C.3.00
  4. D.4.00
Show the answer and explanation

Answer: A (1.00)

Explanation

n = PV/RT = (8.2 × 2.93) ÷ (0.082 × 293) = 1.00 mole.