6CO2 + 6 H2 O Chlorophyll /Sunlight → C6 H12 O6 + 6O2
1 mole of glucose needs 6 moles of water
180 g of glucose needs (6×18) g of water
1 g of glucose will need 108/ 180 g of water.
18 g of glucose would need (108 /180) × 18 g of water = 10.8 g
Volume of water used = Mass/ Density = 10.8 g/ 1g cm-3 =10.8 cm3