If a plant needs 14.9 g of glucose how many grams of water are needed

8.856 grams of water is needed by the plant to make 14.9 grams of glucose.

Explanation:

Data given

mass of glucose needed by plant = 14.9 grams

mass of water needed =?

balanced chemical equation:

6C + 6 ⇒ + 6

molar mass of glucose = 180.15 grams/mole

number of moles =

number of moles =

number of moles= 0.082 moles

from the equation:

1 mole of glucose is produced by 6 moles of water

0.082 moles of glucose is produced by x mole of water

=

x = 0.492 moles of water

atomic mass of water = 18 grams/mole

mass of water required = number of moles x atomic mass of water

mass of water = 0.492 x 18

                        = 8.856 grams