First Law of Thermodynamics

What does the heat capacity of an object measure?

• the amount of energy required to change the temperature of an object

• the thermal potential energy of the object

• the amount of energy required to melt a solid object

• the total amount of energy an object can store

When applying the first law of thermodynamics to a system, when is heat a positive quantity?

• when the system does work

• when the system absorbs heat

• when the system has work done on it

• when the system loses heat

What is 50 °C in Kelvin?

• 223 K

• 100 K

• 323 K

• 50 K

25 °C in kelvins

• 298K

• 298.15 K

• 262 K

• 278 K

What does R stand for

• Ideal gas constant

• Temperature constant

• Real gas constant

• Ideal gas law

Which of the following equations represents the Ideal Gas Law?

• P1V1 = P2V2

• PV = nRT

• PV = mRT

• P1V1/TI = P2V2/T2