Energy

If the specific heat of water is 4.18 J/g∙°C, how much heat is required to increase the temperature of 1,200 g of water from 23 °C to 39 °C?

• -80,256 J

• 80.256 J

• 80,256 J

• -80.256 J

A sample of iron receives 50.J of heat energy that raises the temperature of the iron by 25.0°C. If iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample?

• 25g

• 30g

• 20g

• 50g

What is the formula to calculate heat energy required to raise the temperature of any substance?

• Q = m C ∆T

• Q = m Hv

• Q = ½ m v

• m = Q Hf

What are the accepted units for specific heat capacity?

• J/g * C

• J/g

• g/J * C

• J

In heat capacity equations, what does the triangle represent?

• Temperature

• energy

• mass

• change in

• change in temp

The heat absorbed by melting a solid is known as

• heat of fusion

• heat of solid

• heat of liquid

• heat of vaporization

The amount of heat needed to change 1 gram of a substance from the liquid phase to the gas phase is ___

• Heat of Vaporization

• Boiling point

• Heat Energy

• Phase change

Calorie is a measure of

• Energy

• Weight

• Distance

• Volume