Lesson: Distribution of Molecular SpeedsPhysics
In this lesson, we will learn how to calculate the proportion of particles, in an ideal gas, that have a given speed using the Maxwell–Boltzmann distribution function.
Sample Question Videos
Worksheet: 6 Questions • 2 Videos
An incandescent light bulb is filled with neon gas. The gas that is in close proximity to the element of the bulb is at a temperature of 2,300 K. Determine the root-mean-square speed of neon atoms in close proximity to the element. Use a value of 20.2 g/mol for the molar mass of neon.
Helium atoms in a gas that is at a temperature have a root-mean-square speed of 196 m/s. When the gas is heated until it becomes a plasma with a temperature , the root-mean-square speed of the helium atoms is 618 km/s. Use a value of 4.003 g/mol for the molar mass of helium.
Using the approximation for small , estimate the fraction of nitrogen molecules at a temperature of K that have speeds between 290 m/s and 291 m/s. A nitrogen molecule has a mass of kg.