Question

Heat transfer from solid to liquid:

1. An experiment is being performed. 500g of cold water is poured into a calorimeter. The temperature is measured to be 13.2 degrees celsius. Then, 300 mL of hot water is poured into a beaker and a 500g metal mass or aluminum bar is placed in it. The temperature of the hot water/metal mass is 64.5 degrees celsius. The block is moved from the hot water into the cold water. The final temperature is 18.3 degrees celsius. In this experiment, thermal energy is flowing in which direction? How is it flowing (by what method)?

Heat transfer from solid to gas:

2. In the next part of the experiment, the temperature of air inside the now dry and clean calorimeter is 23.2 degrees celsius. 300 mL of hot water is poured into a beaker and the 500g metal block is placed in it. The temperature of the hot water/metal block is 65.4 degrees celsius. The metal block is removed from the hot water and placed in the calorimeter. The final temperature is 35.8 degrees celsius. Based on this, thermal energy is flowing in which direction? How is it flowing (by what method)?

Answer 1