70 g of a sample of magnesite on treatment with excess of HCl gave 11.2 L of CO_(2) at STP. The percentage purify of the sample

70 g of a sample of magnesite on treatment with excess of HCl gave 11.

1.	70 g of a sample of magnesite on treatment with excess of HCl gave 11.2 L of CO_(2) at STP. The percentage purify of the sample
Answer» 80 70 60 50 Answer :C