1.84 g mixture of CaCO_3 and MgCO_3 was heated to cons†an t weight till 0.96 g residue formed. %(by mass) of MgCO_3 in sample was

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Q. 1.84 g of a mixture of

C a C O_{3}

and

M g C O_{3}

was heated to a constant weight. The constant weight of the residue was found to be 0.96 g. calculate the percentage composition of the mixture..

(C a = 40, M g = 24, C = 12, O = 16)

Q. 92 g mixture of

C a C O_{3}

and

M g C O_{3}

heated strongly in an open vessel. After complete decomposition of the carbonates it was found that the weight of residue left behind is 48 g. Find the mass of

M g C O_{3}

in grams in the mixture.

Q. A sample containing only

C a C O_{3}

and

M g C O_{3}

is ignited to

C a O

and

M g O

. The mixture of oxides produced weight exactly half as much as the original sample. The mass percentages of

C a C O_{3}

and

M g C O_{3}

in the sample are respectively :

Q. A mixture of calcium and magnesium carbonates weighing 1.4 g was strongly heated until no further loss of weight was perceived. The residue weighed 0.76 g. What percentage of

M g C O_{3}

was present in the mixture?

A sample containing only caco3 and Mgco3 is ignited to CaO and Mgo . The mixture of oxides produced weight exactly half as much as the original sample .

Calculate the percentage of caco3 and mgco3 in the sample

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