What is mole concept? how to do its numericals

How many joules of heat are absorbed to raise the temperature of 650 grams of water from 5.00c to it's boiling point, 100c

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false