Q48Long answer
In photosynthesis, 6 molecules of carbon dioxide combine with an equal number of water molecules through a complex series of reactions to give a molecule of glucose having a molecular formula C6 H12 O6. How many grams of water would be required to produce 18 g of glucose? Compute the volume of water so consumed assuming the density of water to be 1 g cm–3. ATOMS AND MOLECULES 25 16-04-2018
Show answer
6CO2 + 6 H2O Sunlight → C H O + 6O 6 12 6 2 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 g of water. 18 g of glucose would need × 18 g of water = 10.8 g Mass 10.8 g Volume of water used = = =10.8 cm3 . Density 1g cm-3 C hapter 4 _lqucpq Multiple Choice Questions