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

the dependant variable is spilled water

the independent is the heat

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o