We have this balanced chemical reaction: O3 ➡ O + O2
If 10mole of O3 is used, how many moles of O2 are made? How many grams of O2 is that?

Which of the following happens during cell division? (a) energy is created (b) waste is eliminated (c) carbon dioxide is released (d) damaged cells are replaced

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

How is an endothermic reaction identified