Which of the following is an endothermic process? Question 1 options: work is done by the system on the surroundings heat energy flows from the system to the surroundings work is done on the system by the surroundings heat energy is evolved by the system none of the abo g

work is done on the system by the surroundings

Explanation:

An endothermic process is any process in which energy is absorbed by the system from the surrounding, usually in the form of heat energy. Energy intake is usually associated with bond braking, and the energy from the surrounding goes into breaking the chemical bond between atoms int the reaction. The quantity of heat absorbed in any endothermic process can be calculated for by analyzing the Gibbs free energy of the reaction system. Endothermic process is mostly associated with heat energy intake by the system from the surrounding, but can also be used to refer to any system that undergoes any form of energy input into the system, from the surrounding even in the form of work.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.