What term describes how much energy it takes to change the temperature of a substance? it is fill in the blank not multiple choice will give you da brain

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.