b. Somewhat silly Q: Compare (which is higher or are they the same?) the temperatures that the Al and water will end up at when they reach thermal equilibrium. Hint: it is called EQUILibrium.

3. When a substance changes phase (in this question, from gas to liquid) it gains or loses energy (latent heat). Would you rather be burned by 5 g of 100o steam that condenses, or 5 g of 100o liquid water? Explain. (Where is energy moving from and where is it going in the condensation process?)