A system gains 697 kJ of heat, resulting in a change in internal energy of the system equal to + 251 kJ How much work is done?

Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size

If two objects at different te,peraure are in contact with each other what happens to their temperature

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.