Identify the arrows that show removal of thermal energy when matter changes state.

What is the theoretical yield of carbon dioxide? a)0.993 gb)2.98 gc)3.65 gd)8.93 g

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have