ANSWER ALL PLEASE WILL THUMBS UP !

1. Duncan takes a break from studying and goes to the gym to swim laps. If swimming burns 8.7510⁵ cal per hour, how many kilojoules does swimming burn in that same amount of time? In other words, convert 8.7510⁵ cal to kilojoules.

2. Some homes that use baseboard heating use copper tubing. Hot water runs through and heats the copper tubing, which in turn heats aluminum fins. It is actually the aluminum fins that heat the air rising through the fins.How much energy would it take to heat a section of the copper tubing that weighs about 705.0 g , from 14.11 C to 28.55 C ? Copper has a specific heat of 0.3850 (J/g)C

3.Typically, water runs through the baseboard copper tubing and, therefore, fresh hot water is constantly running through the piping. However, consider a pipe where water was allowed to sit in the pipe. The hot water cools as it sits in the pipe. What is the temperature change, (T), of the water if 194.0 g of water sat in the copper pipe from part A, releasing 3919 J of energy to the pipe? The specific heat of water is 4.184 (J/g)C