Answer:
23.3 grams
Explanation:
First we'll need the balanced equation for this equation.
2H₂ + O₂ → 2H₂O
This shows us that we need one mole of O₂ to produce two moles of water.
Now we need to convert grams to moles.
There is 18.01528 g for every mole of water
26.2/18.01528 = 1.454321
There 1.454321 moles of water produced
Remember that two moles of water are produced from a gram of O₂
1.454321/2 = 0.72716
0.72716 moles of O₂ were used
Now convert moles back to grams. There are 31.998 g for every mole of O₂
31.998 x 0.72716 = 23.2677
23.2677 grams of oxygen were used
