Please give the neutral formula unit for the combination of NH4 and CO3. Thanks:)?

Please explain. Thanks 4 the help:)

Answer 1

carbonate ions have a -2 charge : (CO3)-2

ammonium ions have a +1 charge: (NH4)+1

a compound has a neutral formula by having as much positivness as negativness
so it needs 2 ammoniums to have 2 positives
to mathch the carbonate with its two negatives

your answer is
(NH4)2CO3

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