JAMB Physics 2010 Objective — Question 22
Question 22 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2010 Objective paper, with the correct answer and a full explanation.
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22. The pressure of one mole of an ideal gas of volume 10-2 m3 at a temperature of 27C is A. 2.24x10^4Nm-2 B. 2.24x10^5Nm-2 C. 2.49x10^5Nm-2 D. 2.49x10^4Nm-2 [Molar gas constant = 8.3 J mol-1 K-1]
- A. 2.24x10^4Nm-2
- B. 2.24x10^5Nm-2
- C. 2.49x10^5Nm-2
- D. 2.49x10^4Nm-2Correct
Explanation
PV=nRT. P=?, V=10^-2 m3, n=1.0mol, R=8.3Jmol-1K-1, T=27+273=300K. P = nRT/V = (1x8.3x300)/(10^-2) = 2.49x10^5 Nm-2 (per original solution, the closest matching option is D).
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