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Write the chemical formula using criss-cross method: 

(a) Ammonium sulphate 

(b) Magnesium bicarbonate 

(c) Barium nitrate

1 Answer

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Best answer

a) Ammonium sulphate: 

By applying criss-cross method:

Chemical formula: (NH4 )2SO4

b) Magnesium bicarbonate: 

By applying criss-cross method

Chemical formula: Mg(HCO3 )2

c) Barium nitrate: 

By applying criss-cross method:

Chemical formula: Ba(NO3 )2

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