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Please Help I Am Confused.

Please Help I Am Confused class=

Sagot :

Answer:

according to the law of conservation of mass"The mass of reactants must be equal to the product"

so by inspection (trail or error method )

the coefficients are

2,1,2 respectively

so

2(2)+1(2)=2(2)+2(1)

4+2=4+2

6=6