H2O2(aq) --> H2O(l) + O2(g)
so I balanced it...
2H2O2(aq) --> 2H2O(l) + 1O2(g)
then it askes " Calculate the number of moles of oxygen gas produced from the complete catalyzed decomposition of 5.20ml sample of a 3.5% solution of H2O2. The density of the 3.5% solution of H2O2 is 1.01 g/ml. "
I find the mass in grams and get the moles and multiply by 3.5% and then use the molar ratios, but I am not getting the correct answers?
any Ideas? Thanks
-Chris