If you are using 15. mL of 6.0% H2O2 by mass (m/m), and you assume that the density of the solution is 1.0 g/mL and that all of the hydrogen peroxide decomposes according to the reaction:2H2O2(aq) --> 2H2O(l) + O2(g). What is the total umber of moles of (dry) oxygen gas that can be generated? What is the partial pressure of oxygen if the gas is contained in a 250. mL bottle at 25.C?