Chemistry Practice Test – Kinetic Theory of Matter and Gas Laws (Questions with Answers and Explanations)

Which law can be used to calculate the number of moles of a contained gas?

(a) Boyle’s law
(b) Combined gas law
(c) Ideal gas law
(d) Charles law

80 cm³ of gas A diffused in 8 seconds and 120 cm³ of another gas B diffused in 12 seconds. Calculate the rates of diffusion in cm³/s of gas B. (NECO 2016) 

A. 5.0
B. 7.5
C. 10.0
D. 15.0

The general gas equation    is a combination of _______ (WASSCE 2016) 

A. Boyle’s and Charles’ law
B. Boyle’s and Graham’s law
C. Charles’ and Graham’s law
D. Dalton’s and Graham’s law

A chemist has identified the temperature, volume, and pressure of a sample of an ideal gas. What additional fact about the gas can be determined?

(a) Number of moles of gas in the sample
(b) Molar mass of the gas
(c) Number of atoms per molecule of the gas
(d) None of the above

Which of the following relationships correctly expresses the Boyle’s law? [WASSCE]