Matter and Gas Laws

2.0 L of a gas initially at a pressure of 1.0 atm, is allowed to expand to a new volume of 4.0 L while maintaining a constant temperature. What can be said of the new pressure, and the change in kinetic energy of the gas particles?

• The new pressure is 0.5 atm and the kinetic energy of the particles doubles

• The new pressure is 0.5 atm and the kinetic energy of the particles is unchanged

• The new pressure is 2.0 atm and the kinetic energy of the particles doubles

• The new pressure is 2.0 atm and the kinetic energy of the particles is unchanged

Which state or states of matter are significantly compressible?

• liquids and gases

• solids and liquids

• liquids

• gases

Under what conditions are the assumptions of Kinetic Molecular theory most likely to fail?

• High pressure and high temperature

• High pressure and low temperature

• Low pressure and low temperature

• Low pressure and high temperature

Use the kinetic molecular theory model to predict what would happen to a closed sample of a gas if the temperature decreased while its pressure increased.

• The volume would increase

• The volume would decrease

• The average kinetic energy of the molecules would increase

• The moles of gas molecules would increase

The temperature of a fixed mass of gas in a rigid container is raised from 28.00 degrees Celsius to 88.00 degress Celsius. The initial pressure was 1000. mmHg. What is the new pressure, after heating?

• 1100. mmHg

• 1060 mmHg

• 1.578 atm

• 1.000 atm

3.00 moles of a gas are contained in a 3.00 liter vessel at a temperature of 200. degrees Celsius at a pressure of 5.00 atm. Tha gas is allowed to expand to a new volume of 4.50 liters, but at the same time maintaining the original temperature. What is the new pressure?

• 2.33 atm

• 3.33 atm

• 3.00 atm

• 5.00 atm

A gas that is confined in a rigid container is heated. Which of the following statements is FALSE?

• The Kinetic energy of the gas particles will increase

• The pressure will increase

• The density will remain constant

• The number of moles of gas will increase

Tags

NGSS.HS-PS3-2

A gas is held under conditions of standard temperature and pressure. It is found that 14.0 grams of the gas occupies a volume of 11.2 L under these conditions. What is the gas?

• Carbon Dioxide

• Nitrogen

• Fluorine

• Chlorine

A gas is heated from 20.000 degrees Celsius to 122.55 degrees Celsius at a constant pressure of 1.0000 atm. If the initial volume is V, what will be the new volume?

• V/293

• 1.35 V

• 122.55 V

• 395.55 V

One of the following assumptions is NOT part of the kinetic theory. Which one?

• The particles in a gas cannot be compressed

• The speed of the particles in a gas is directly proportional to the Kelvin temperature

• The particles in a gas collide with one another in elastic collisions

• (B) The particles in a gas are not attracting one another