Question

Which statements are true? When energy is transferred as heat from the system to the surroundings, h is negative. H for an endothermic reaction is positive. The evaporation of water is an exothermic process. When energy is transferred as heat from the surroundings to the system, h is negative. A combustion reaction is exothermic. H for an exothermic reaction is positive?

Answer 1

Answer:

here is your answer

Explanation:

A combustion reaction is exothermic. H for an exothermic reaction is positive___This statement is True:)

Answer 2

Answer:

A reaction that absorbs heat is endothermic. Its enthalpy will be positive, and it will cool down its surroundings. This reaction is exothermic (negative enthalpy, release of heat). When the reaction occurs, the surroundings will increase in temperature due to the gain of heat the system releases.