Heat rev

What units is heat measured in?

• Joules (J)

• Grams (g)

• Celsius (C)

• Joules per gram degree celsius (J/g^oC)

What is the equation to calculate heat when the temperature is changing?

• q = mCΔT

• q = mH_f

• q = mH_v

• q_water = -q_metal

What is the equation to calculate the amount of heat required to boil a substance at it's boiling point?

• q = mCΔT

• q = mH_f

• q = mH_v

• q_water = -q_metal

If an ice cube absorbed 150 J of heat from a glass of water, how much heat was released by the water?

• -150J

• 150J

• 150 x 4.18

• Not enough information

How much heat is required to raise 15 grams of water by 53^oC?

• 3323 J

• -3323J

• 4.18J

• 795J

What is the specific heat capacity of a metal if 42g of it were cooled from 58^oC to -51^oC while -4000J of heat were released.

• 0.87J/g^oC

• 4.18J/g^oC

• 18,312,000J

• 19,136J

How much heat is required to completely melt 28g of water at 0^oC?

• 117J

• 0J

• 9,352J

• 39,091J

How much heat is required to completely boil 91g of water at 100^oC?

• 205,660J

• 20,566,000J

• 380J

• 859,659J

What is the heat of vaporization of a substance that required 90,000.J to heat 74g?

• 6,660,000J/g

• 1216J/g

• 167,240J/g

• 2260J/g

How much heat is required to raise 644g of water from 58^oC to 89^oC?

• 83,450J

• -83,450J

• 19,964J

• -19,964J