Given the balanced equation representing a reaction occurring at 101.3kPa and 298K:
2H2 + O2 + 2H2O + 571.6kJ

What is the total amount of energy released when
0.75mol of H2O is produces?

1) 214.4 kJ
3) 285.8 kJ
2) 428.7 kJ
4) 571.6 kJ

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

The identities of substances are the same before and after which type of change

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".