Question

How many moles of o2 will result from the decomposition of 5 mol of hydrogen peroxide?

Answer 1

in hydrogen peroxide theres 2 moles of o2 in each hydrogen peroxide atom. So, if you have 5 hydrogen peroxide then you would have 10 moles of o2

Answer 2

So following this simple ratio, 4 moles of H2O2 will result in 2 moles of O2. For 1 mole of H2O2, it will yield to 0.5 moles of O2. Adding those up, 5 moles of H2O2 will yield to 2.5 moles of O2.