2. If 500g of water at 70ºC loses 22 kJ of heat (hint-be sure to use proper units), find:
a. The specific heat of water
b. The temperature change (delta t)
c. The final temperature of the water
3. A 125g sample of gold, whose specific heat is 0.129 J/gºC, is warmed from 15ºC to 24ºC. How much heat is transferred during this process?
4. A 150g sample of water at 25ºC is mixed with a 25g sample of water at 65ºC. Assuming no heat is lost to the enviornment, what is the final temperature of the 175g sample of water?