To make a 4 cup pot of green tea, one must heat the water to the boiling point at standard pressure. If the pot contains 680 grams of water, and the temperature at the tap is 20.0°C, how much heat must be absorbed by the water? (Use 4.18 J/g °C for the specific heat of water; water boils at 100oC)

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.