502 3CO2 4H2O How many moles of O2 are necessary to comple

+ 502 3CO2 + 4H2O How many moles of O2 are necessary to completely burn 4.33 mol C3Hs? 4b Given the reaction: C3118

Solution

From the balanced chemical reaction,

1 mole of C3H8 requires 5 moles of O2

4.33 moles of C3H8 requires 5*4.33= 21.6 moles of O2

Therefore the required number of moles of O2 is 21.6 moles