List two characteristics used to classify air masses.

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."