Post-UTME Chemistry 2019 Objective — Question 3
Question 3 of 20 from the Post-UTME Screening (Post-UTME) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
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The pressure of 100cm^3 of oxygen at 35 degrees C is 750mmHg. What would be the volume of the gas if the pressure is increased to 1000mmHg without changing the temperature?
- A. 133.3cm^3
- B. 85cm^3
- C. 75cm^3Correct
- D. 65cm^3
Explanation
Boyle's law: P1V1 = P2V2 => V2 = (750 x 100)/1000 = 75cm^3.
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