What number belongs where "X" is to properly balance this equation? 2 NaCl →
2 Na + Ecl2
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Option D: 1

Explanation:

The chemical equation given is;

2NaCl = 2Na + XCl2

We want to find the value of X.

On the left hand side, we can see we have 2 moles of both Na and Cl.

On the right hand side, we can see that we have 2 moles of Na and also 2 moles of Cl. Thus, the equation is balanced and as such X = 1

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because growing process had stoped after 4-5 year