Question

If a plant produces 9.31 mol of C6H12O6, how many moles of H2O are needed?

Answer 1

The complete balanced chemical equation for photosynthesis in plants is:

6CO₂ + 6H₂O ----> C₆H₁₂O₆ + 6O₂

Based on the balanced equation the molar ratio between H₂O and C₆H₁₂O₆ is 6:1

This means that 6 moles of H₂O is need for every 1 mole of C₆H₁₂O₆

9.31 mol of C₆H₁₂O₆ x (6 moles of H₂O / 1 mole of C₆H₁₂O₆) = 55.86 moles of H₂O

Thus the moles of H₂O need is 55.86 .

Answer 2

Answer;

55.86 moles

Explanation;

Six molecule of H2O is needed for every molecule of C6H12O6 to be produced.

This means the ratio of H2O: C6H12O6 is 6:1  

Let H2O mole= X  

Therefore...

X/9.31 = 6/1  

X= 6 x 9.31

X = 55.86 moles