Problem: Balance the following equations by inserting the proper coefficients.3. ___ P + ___ Cl2 → ____ PCl34. ____ CO + ____ O2 → ____ CO2

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We’re being asked to balance the given equations.


Recall that when balancing chemical equations, we have to make sure that the number of elements on both sides is equal with the lowest whole number coefficients.


Reaction 1:

____ P + ___ Cl2 → ____ PCl3

P      1

Cl      

P      1

Cl      3


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Problem Details
Balance the following equations by inserting the proper coefficients.

3. ___ P + ___ Cl2 → ____ PCl3
4. ____ CO + ____ O→ ____ CO2



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