Engineering Board Exam Reviewer · Chemistry · medium

Balance the equation: C3 H8 + O2 CO2 + H2O. What is the coefficient of O2?

  1. 3
  2. 5
  3. 4
  4. 10

Answer

B. 5

Solution

C3H8 + 5 O2 3 CO2 + 4 H2O.

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