Hey ! CHEM WHIZ answer this!?

find the empirical formula!
sodium hydride
calcium hydrogen carbonate
barium bromate
ammonium phosphite

Answer:
NaH
2 ) Ca(HCO3)2
3 ) Ba(BrO3)2
4 ) (NH4)3PO3
1 ) NaH
2 ) Ca(HCO3)2
3 ) Ba(BrO3)2
4 ) (NH4)3PO3

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