20. how many grams of CO2 are produced from 125 g of O2 and excess CH4?

CH4 + 2O2 ----> CO2 + 2H2O

a) 172 g of CO2

b) 125 g of CO2

c) 85.9 g of CO2

d) 250.0 g of CO2

e) 62.5 g of CO2

2 Answers

  • C 🙂

  • find molar mass of CO2 and of O2


    (125gO2)(MM O2)(1 mol CO2 / 2 mol O2)(MM CO2) = g CO2

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