Question 15 (1 point)
Which equation below is correctly balanced?
a
C7H14 + O2 -> CO2 + 7H2O
b
C7H14 + O2 -> CO2 + H2O
c
2C7H14 + 21O2 -> 14CO2 + 14H2O
d
C7H14 + 7O2 -> 7CO2 + 7H2O
c
2C7H14 + 21O2 -> 14CO2 + 14H2O