Chemistryhard · Past Paper
What is the correct coefficient for H2O in the balanced equation: C3H8 + 5O2 -> 3CO2 + _H2O?
A2
B3
C4
D5
✓ Correct Answer: C — 4
Propane (C3H8) has 8 hydrogens, so 4 water molecules are needed to balance hydrogens.
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