Calculate the grams of O2 produced from 25.55 grams of KClO3. Round to the nearest whole number. 2KClO3 → 2KCl + 3O2

If 22.5 of nitrogen at 748 mm hg are compressed to 725 mm hg at constant temperature. what is the new volume?

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products