Why does the rate of a chemical reaction increase with a rise in the temperature of the reactants?

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

If i make a solution by adding 83grams of sodium hydroxide to 750ml i’d water what is the molarity of sodium hydroxide

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.