How do you know that a sealed calorimeter is a closed system? because the temperature is conserved because the masses of the sample and water are equal because the thermal energy is not transferred to the environment because the work is done on the test sample

A sealed calorimeter is a closed system because thermal energy is not transferred to the environment.

A closed system is an isolated system where there is no transfer of energy with its surroundings. Also the system is not subjected to any external force whose source is external to the system.

answer; i believe the correct answer is (40,000 j) good luck

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !