| A | B |
|---|
| 250.0-g of copper at 100˚C are placed in a cup containing 325.0 g of water at 20.0˚C. Assume no heat loss to the surroundings. What is the final temperature of the copper and water? | 25.2˚C |
| A 400-g sample of methanol at 30˚C is mixed with a 200-g sample of water at 0.0˚C. Assume no heat loss to the surroundings. What is the final temperature of the mixture? | 16.2˚C |
| An 800-g block of lead is heated in boiling water, 100˚C, until the block's temperature is the same as the water's. The lead is then removed from the boiling water and dropped into 250 g of cool water at 12.2˚C. After a short time, the temperature of both lead and water is 20.0˚C. On the basis of these measurements, what is the specific heat of lead? | 127 J/kg-˚C |
| A 100-g mass of tungsten at 100.0˚C is placed in 200 g of water at 20.0˚C. The mixture reaches equilibrium at 21.6˚C. Calculate the specific heat of tungsten. | 171 J/kg-˚C |
| A 600-g sample of water at 90.0˚C is mixed with 400 g of water at 22.0˚C. Assume no heat loss to the surroundings. What is the final temperature of the mixture? | 63˚C |
| A 10-kg piece of zinc at 71.0˚C is placed in a container of water. The water has a mass of 20.0 kg and has a temperature of 10.0˚C before the zinc is added. What is the final temperature of the water and the zinc? | 12.7˚C |
