A piece of copper alloy with a mass of 85.0 g is heated from 30oC to 45oC. In the process, it absorbs 523 J of energy as heat. What is the specific heat of this copper alloy? q=mCpΔT q: heat m: mass Cp: specific heat constant ΔT= T f-Ti T f: final temperature Ti: initial temperature

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt