What mass of oxygen gas is produced by the reaction of 4.09g of carbon dioxide?

Question

Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water H2O and carbon dioxide CO2 chemically react to form the simple sugar glucose C6H12O6 and oxygen gas O2.

What mass of oxygen gas is produced by the reaction of 4.09g of carbon dioxide?

Be sure your answer has the correct number of significant digits.

Answer 1

The balanced equation would be:

6 CO_2(g) + 6 H₂O_(g) → C₆H₁₂O_6(s) + 6 O_2(g)

(32.0 g O₂/1 mol O₂) (6 mol O₂/6 mol CO₂) (1 mol CO₂/44.0 g CO₂) 4.09 g CO₂ = 2.975 = 2.98 g O₂