A scuba tank holds 16.0 L of air at pressure of 225 atm at a temperature of 20.0 0C.  How many molecules of air are in the tank?

A 4.00 moles of a monoatomic ideal gas is heated from 20.0 0C to 100 0C.  What is the change in internal energy of the gas?

What is the work done on 4.00 moles if a monoatomic ideal gas compressed from 975 mL to 250 mL at constant pressure of 3.00 atm?

What is the internal energy of 1.75 moles of an ideal monoatomic gas at a temperature of 20.00 C?

How much energy does it take to heat 4.0 moles of a monoatomic ideal gas from 20.0 0C to 100 0C at constant volume?

A refrigerator needs to move 125 J of heat from its 5.00 0C interior per cycle and move it heat to a 20.0 0C exterior region.  What is the maximum coefficient of performance possible for this refigerator?

Different racial and ethnic groups are still spatially separated in almost every community in the United States is an example of 

A teacher intentionally fail students because of their color is : 

Shared culture, which may include heritage, language, religion, etc is called

The _______ class is also referred as the working class