Post-UTME Chemistry 2012 Objective — Question 3
Question 3 of 11 from the Post-UTME Screening (Post-UTME) Chemistry 2012 Objective paper, with the correct answer and a full explanation.
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If the quantity of oxygen occupying a 2.71dm3 container at a pressure of 0.825 atmospheres and 300K is reduced by one half, what is the pressure exerted by the remaining gas?
- A. 1.650atm
- B. 0.825atm
- C. 0.413atmCorrect
- D. 0.275atm
Explanation
Halving the amount of gas at constant volume and temperature halves the pressure: 0.825/2 = 0.413atm. (No printed answer key for this session; answer worked out independently.)
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