1. Water and steam are both 100 ºC when water is boiling, but a burn from steam is worse than a burn from the water. Hypothesize why this is true.
2. A 10 g ice cube, initially at 0 ºC, is melted in 100 g of water that was initially 20 ºC. After the ice has melted, the equilibrium temperature is 10.93 ºC. Calculate:
a. The total heat lost by the water (the specific heat for water is 4.186 J/g/K).
b. The heat gained by the ice cube after it melts (the specific heat for ice is 2.093 J/g/K).
c. The heat it took to melt the ice (Hint: it takes 334 J of heat energy to melt 1 g of ice).
3. Inside a calorimeter is 100 g of water at 39.8 ºC. A 10 g object at 50 ºC is placed inside of a calorimeter. When equilibrium has been reached the new temperature of the water and metal object is 40 ºC. What type of metal is the
object made from?