Chemistry HW help

Question

Glucose,  is used as an energy source by the human body. The overall reaction in the body is described by the equation

C6H12O6(aq)+6O2(g)⟶6CO2(g)+6H2O(l)

Calculate the number of grams of oxygen required to convert 38.0 g

 of glucose to CO2 and H20

Answer 1

C₆H₁₂O₆(aq) + 6O₂(g) ==> 6CO₂(g)+ 6H₂O(l) ... BALANCED EQUATION

From the balanced equation, we see that it takes SIX moles of O₂(g) to react with ONE mole C₆H₁₂O₆

Using this mol ratio information, we can find the moles of O₂ needed to react with 38.0 g of glucose and then convert that to grams of oxygen.

38.0 g C₆H₁₂O₆ x 1 mol C₆H₁₂O₆ / 180 g x 6 mol O₂ / mol C₆H₁₂O₆ = 1.27 moles O₂ needed

1.27 mol O₂ x 32 g O₂/mol O₂ = 40.6 g O₂ needed