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balancing equations

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asannea:
Hello,
i am a parent in need of help with my child homework. i need to balance the following equations and classify each reaction:

C3H8 + O2---->Co2 + H2O
(my ??? answer Ch3h8---->2Co2 + 2H2O) is this right?


Kl +Br2----->KBr +l2
H2 + Cl2----->Kbr +l2
H2 + Cl2---->HCl
FeS + HCl-----> FeCl2 +H2S

Donaldson Tan:
C3H8 is n-propane. its strucutre is as follow:
H3C-CH2-CH3

C3H8 + 5 O2 -> 3 CO2 + 4H2O

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