Table of Contents

- 1 Which gas has the highest root mean square speed?
- 2 Does root mean square speed increase with temperature?
- 3 What gas has the highest kinetic energy?
- 4 What are 3 ways to increase the pressure of a gas?
- 5 Why use root mean square instead of average?
- 6 What does the kinetic molecular theory explain at least 3 things?
- 7 Which is the root of the RMS velocity?
- 8 What is the root mean square velocity of O2?

## Which gas has the highest root mean square speed?

FREE Expert Solution The only difference the gases have is their molar masses (M). The molar mass (M) is in the denominator so the smaller the molar mass (M) of the gas, the larger the μrms would be. Methane (CH4) has the smallest molar mass (M), therefore it will have the largest room mean square speed (μrms).

## Does root mean square speed increase with temperature?

The rms velocity is directly proportional to the square root of temperature and inversely proportional to the square root of molar mass. Thus quadrupling the temperature of a given gas doubles the rms velocity of the molecules. As the temperature of a gas is increased, the velocity of the molecules is also increased.

**What is the average speed of Kr?**

The average molecular speed in a sample of Kr gas is 286.58 m/s at the same temperature.

**What gas has the lowest root mean square speed?**

The only difference the gases have is their molar masses (M). The molar mass (M) is in the denominator so the larger the molar mass (M) of the gas, the smaller the μrms would be. (E) Ar will have the smallest room mean square speed (μrms).

### What gas has the highest kinetic energy?

Particles at the same temperature have the same average kinetic energy, so argon and nitrogen, which are at 20°C , are the gases with the lowest average kinetic energy. Nitrogen and helium, at 100°C , have the highest average kinetic energy because they have the highest temperature.

### What are 3 ways to increase the pressure of a gas?

Three Ways to Increase the Pressure of a Gas

- Increase the amount of gas. This is represented by the “n” in the equation.
- Increase the temperature of the gas. This is represented by “T” in the equation.
- Decrease the volume of the gas. This is the “V” in the equation.

**Does root mean square velocity depends on pressure?**

Root mean square velocity does not depend upon pressure.

**What is K in RMS?**

The root mean square (R.M.S.) Speed V of the molecules of an ideal gas is given by the expressions, v = sqrt (3RT/M) and v = sqrt (3KT/m) where R is universal gas constant, T is the absolute (Kelvin) temperature M is the molar mass, K is Boltzman’s constant and M is the molecular mass.

#### Why use root mean square instead of average?

RMS gives you the equivalent DC voltage for the same power. If you would measure the resistor’s temperature as a measure of dissipated energy you’ll see that it’s the same as for a DC voltage of 0.71 V, not 0.64 V. Measuring average voltage is cheaper than measuring RMS voltage however, and that’s what cheaper DMMs do.

#### What does the kinetic molecular theory explain at least 3 things?

Kinetic theory explains macroscopic properties of gases, such as pressure, temperature, viscosity, thermal conductivity, and volume, by considering their molecular composition and motion. individual gas particles collide with the walls of the container thus producing a force.

**How to calculate the root mean square speed of gas?**

Online chemistry calculator to calculate root mean square (RMS) speed of gas, using gas molecular mass value. The root-mean-square speed (u), is the square root of the average speeds of the molecules in a sample of gas at a specific temperature and pressure.

**What is the root velocity of a gas?**

Gases consist of atoms or molecules that move at different speeds in random directions. The root means square velocity (RMS velocity) is a way to find a single velocity value for the particles.

## Which is the root of the RMS velocity?

The root means square velocity (RMS velocity) is a way to find a single velocity value for the particles. M = mass of a mole of the gas in kilograms.

## What is the root mean square velocity of O2?

Oxygen gas (O2) is comprised of two oxygen atoms bonded together. Therefore: Convert this to kg/mol: Answer: The average velocity or root mean square velocity of a molecule in a sample of oxygen at 0 °C is 461 m/sec.