hw help CH4 + 2O2 ------> CO2 + 2H2O Calculate the molecules of O2 needed to produce 3.65 x 1024 molecules of CO2?

Question

CH4 + 2O2 ------> CO2 + 2H2O

Calculate the molecules of O2 needed to produce 3.65 x 1024 molecules of CO2?

Answer 1

CH4 + 2O2 ==> CO2 + 2H2O ... balanced equation

You can read this as 1 mol CH4 + 2 mol O2 = 1 mol CO2 + 2 mol H2O ... or you can read it as

1 molecule CH4 + 2 molecules O2 = 1 molecule CO2 + 2 molecules H2O

3.65x10²⁴ molecules CO₂ x 2 molecules O₂ / molecule CO₂ = 7.30x10²⁴ molecules O₂ needed