As far as I can tell, dolomite is a 50/50 mixture (mostly) of CaCO3 and MgCO3.
CaCO3 ==> CaO + CO2
MgCO3 ==> MgO + CO2
5.424/2 = approx 2.7 g MgCO3 and approx 2.7 g CaCO3.
Starting with these amounts and the equations above, solve for grams CaO and grams MgO, then add those together.
Post your work if you get stuck.
The mineral dolomite has the formula caco3.mgco3. When dolomite is heated for an extended period of time at elevated temperature it decomposed to give carbon dioxide and a mixture of calcium oxide and magnesium oxide. If a 5.424 g sample of the mineral is heated for several hours at 950 degrees celcius. How many grams should the mixed oxide residue remaining weight?
1 answer