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OpenStudy (anonymous):
The mineral magnesite containsmagnesium carbonate, MgCO3 (molar mass = 84 g/mol), and other impurities. When a 1.26-g sample of magnesite was dissolved in hydrochloric acid, 0.22 g of CO2 was generated. If the magnesite contained no carbonate other than MgCO3, what was the percent MgCO3 by mass in the magnesite? The equation is MgCO3(s) + 2HCL(aq) --> MgCL2(aq) + H2O(l) + CO2(g)
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