how many grams of CH4 are needed to completely react with 96.00 g of O2 ?

Question

CH4 + O2 --> CO2 + H2O

Answer 1

First you need to balance the equation.

CH4 + 2O2 == CO2 + 2H2O

Now convert the 96.00 grams of O2 to moles by dividing by 32 g /mol.

The molar ratio is 1:2, that is one mole of CH4 for every 2 moles of O2.

Calulate the moles of CH4. Now multiply by the molecular mass of CH2 (16 grams /mol) and you have your answer