2) The thermodynamic quantity that expresses the extent of randomness in a system is . A) enthalpy B) internal energy C) bond energy D) entropy E) heat flow

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume