Question #1ddc1

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Rogan V.
May 20, 2015

Formula for Potassium Sulphate is #K_2SO_4# and the formula for Calcium Acetate is #Ca(C_2H_3O_2)_2#

Sulphate polyatomic ion has a charge of -2 and Potassium has a charge of +1 that is why the Potassium gets a subscript 2 after it in the formula.

Calcium has a charge of +2 and the Acetate (#C_2H_3O_2#) has a charge of -1 so therefore the acetate is put in brackets and gets a subscript 2 behind it.

Hope I helped :)

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