When the following equation is balanced the coefficient of oxygen is
__c3h4 + __o2 → __co2 + _h20
a. 1
b. 2
c. 3
d. 4

When the equation is balanced, the coefficient of oxygen is 4. The correct option is d. 4

The given equation is __C3H4 + __O2 → __CO2 + _H20

This is the equation of the reaction between Propyne (C₃H₄) and Oxygen(O₂) to give Carbon(IV)oxide(CO₂) and Water (H₂O).  

To determine the coefficient of oxygen when the equation is balanced,

First, we will write the balanced form of the equation.

C₃H₄ + O₂ → CO₂ + H₂O

To balance the equation, we will ensure that the same number of each element is represented on the reactant and product sides ( that is, obey the law of conservation of matter)

The balanced form of the equation is

C₃H₄ + 4O₂ → 3CO₂ + 2H₂O

C = 3

H = 4

O = 8

C = 3

H = 4

O = 8

Therefore, the equation is balanced

From the balanced equation, we can observe that the coefficient of oxygen is 4.

Hence, when the equation is balanced, the coefficient of oxygen is 4. The correct option is d. 4

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The answer to your question is:  4

Explanation:

                      __C3H4   +    _4O2    →     _3CO2    +    2H20

                                          3      C   3

                                          4     H   4

                                         8       O   8