Balancing help..

[mandy]

I am trying to balance NH₄I(s) + Cl₂(g) = NH₄₂Cl(s) + I₂(s)

Please help I cannot figure this one out!!

[GrahamKemp]

Uh...

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NH42Cl

... ?

There's your problem right there. It's just

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NH4Cl

.

Then it becomes simple.
There's 2 chlorine on the left, so put 2 on the right.
That makes 2 nitrogen on the right, so put 2 on the left.
That makes 2 iodine on the left, and we have 2 on the right, so we're done.

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2 NH4I (s) + Cl2 (g) = 2 NH4Cl (s) + I2 (s)

[mandy]

oops yeah I do see that extra 2 now. Thanks so much