What is the total number of moles of the reactants in the following reaction? 2h2(g) + o2(g) 2h2o(l)

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible?

Which of the following is the correct formula for copper (i) sulfate trihydrate? cuso4 · 3h2o cuso4(h2o)3 cu2so4(h2o)3 cu2so4 · 3h2o

State one important difference between a physical change and a chemical change?