The molecular weight of nitrogen is 28 g/mol. What is the rms speed of nitrogen molecules at 8.0°C?

Question

Quizplus · Accepted Answer

The rms speed of a gas molecule is given by the formula: $ v_{rms} = \sqrt{\frac{3kT}{m}} $, where $ k $ is the Boltzmann constant, $ T $ is the temperature in Kelvin, and $ m $ is the mass of one molecule. Converting 8.0°C to Kelvin gives 281 K. Using the molecular weight of nitrogen (28 g/mol), the rms speed is approximately 500 m/s.

The Molecular Weight of Nitrogen Is 28 G/mol