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Question

In the following reaction, the value of y will be:

3Fe+4H2OFe3O4+yH2

Then, y = ___


A

4

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B

4

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C

2

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D

5

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Solution

The correct option is B

4


3Fe+4H2OFe3O4+4H2

A balanced chemical equation has number atoms of each element equal on both sides.


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