Stoichiometry Problem

Question

9. 9.How many grams of oxygen did I use in my experiment to produce 50.0g of water?

                                    CH4       +     O2           CO2           +     H2O

 

 

 

10. 10.How many moles of water are produced if we burn 0.46 moles of methane? (use equation from #9)

 

 

 

 

 

 

11. 11.How many grams of carbon dioxide are produced from burning methane with 798moles of oxygen? (use equation from #9)  

Answer 1

9) Balanced reaction: CH₄ + 2 O₂ --> CO₂ + 2 H₂O.

(50.0g H₂O) * (1 mole H₂O /18.02g H₂O) * (2 mole O₂ /2 mole H₂O) * (32.00g O₂ /1 mole O₂) = 88.8g O₂.

10) Same reaction: (0.46 mole CH₄) * (2 mole H₂O /1 mole CH₄) = 0.92 mole H₂O.