Two molecules of dichlorine pentoxide decompose to form two molecules of chlorine gas and five molecules of oxygen gas. What amount of oxygen is produced from the decomposition of 6.20 mol of dichlorine pentoxide? 31.0 mol
15.5 mol
2.48 mol
12.4 mol

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle. if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3.2 kilopascals, what is the partial pressure of the hydrogen?