Question

what is mean NH3 and NH4​

Answer 1

Answer:

NH3-N represents the Nitrogen content of the ammonia, NH4-N is the nitrogen content of the ammonium ion. This is used when people wish to track nitrogen through the treatment process. The nitrogen is converted to nitrate NO3- (a negatively charged ion) by the normal treatment processes.

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Answer 2

Answer:

these are the formulas of science