Which of the following rock types form from placing other rocks under heat and pressure? a. sedimentary rock b. metamorphic rock c. intrusive igneous rock d. extrusive igneous roc

Your answer should be metamorphic rock.

I think the answer is B. Metamorphic rock.

let that person have a turn to speak : )

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.