Balance the following reaction:

A2B + DC3 --> AC + D2B3

Hint: Don't do this in your head. Use a piece of paper and a pencil.

When this reaction is balanced, what number must be to the left of AC? _________________

(Use numerals such as 1, 2, or 3; not words such as one, two, or three)

Respuesta :

  The  balanced   reaction is as below

3A2B  +2DC36 AC + D2B3


Explanation

According to the law of mass  conservation  the   number of  atoms   in the reactant  side must be equal  to  number of atoms  in  product  side.

putting  coefficient  3   in  front  of  A2B, 2 in front DC3 and 6  in front of AC  balance  the equation , since the  number  of atoms is equal in both side.


for  example  we  have 3 atoms of A   in   both reactant  and    products side.

Answer:

the answer was 6, it's not wrong

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