Which statements describe the focus of an earthquake? Select three options

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?

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.