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JAMB Physics 2010 Question 22

Question 22

Gas Laws

The pressure of one mole of an ideal gas of volume 10−2m3 at a temperature of 27°C is [Molar gas constant = 8.3 J mol−1K−1]

  1. A.2.24 × 104 Nm−2.
  2. B.2.24 × 105 Nm−1.
  3. C.2.49 × 105 Nm−1.
  4. D.2.49 × 104 Nm−2.
Show the answer and explanation

Answer: C (2.49 × 105 Nm−1.)

Explanation

P = nRT/V = 1 × 8.3 × 300 ÷ 10−2 = 2.49 × 105 N m−2.