Question

Green plants use light from the sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas form aqueous glucose and oxygen gas. Calculate the molecules of water needed to produce ___ of oxygen. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.

Answer 1

Photosynthesis is the process in which green plants and some other organisms that makes use of the energy from the sun, converts carbon dioxide and water into glucose (a sugar) and oxygen.

Equation

6 CO2 + 6 H2O → C6H12O6 + 6 O2

The number of moles of oxygen that can be obtained from 25g of water is

= 25g/ 6( (2*1)+(16) )= 25/108

= 0.23mol

Therefore 0.23moles of water yields 0.23 moles of oxygen