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The velocity, V of a gas is related to its mass, M by (k =...

Chemistry
JAMB 2019

The velocity, V of a gas is related to its mass, M by (k = proportionality constant)

  • A. V = \(\frac{k}{M}\)
  • B. V = \(\frac{k}{M^{\frac{1}{2}}}\)
  • C. V = \(kM^2\)
  • D. V = \((\frac{k}{M})^{\frac{1}{2}}\)
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Correct Answer: Option B
Explanation

Recall:

V = \(\sqrt{\frac{3RT}{M}}\)

\(\therefore V \propto \frac{1}{\sqrt{M}}\)

\(V = \frac{k}{\sqrt{M}}\)

V = \(\frac{k}{M^{\frac{1}{2}}}\)

There is an explanation video available below.


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Explanation Video

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WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free