Question

Cellular respiration transforms glucose and oxygen into carbon dioxide, water, and energy.



C6H12O6 + 6O2 → 6CO2 + ?H2O + Energy



Based on the law of conservation of matter, what is the missing coefficient for water?


(1 point)
Responses

2
2

6
6

8
8

4

Answer 1

6

Balancing atoms: C: 6 → 6 CO2; H: 12 → needs 6 H2O (6×2 = 12 H); O: left 6 (from glucose) + 12 (from 6 O2) = 18, right 6 CO2 = 12 O + 6 H2O = 6 O → 12+6 = 18.