2.6g of a mixture of calcium carbonate and magnesium carbonate is strongly heated to constant mass 1.3 g. The atomic weights of calcium and magnesium are 40 and 24 respectively. State which of the following masses expresses the mass of calcium carbonate in the original mixture?
(a) 980 mg (b) 400 mg (c) 1.75 g (d) 0.74 g
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Your answer is 400 mg of this question mark this answer brainliest
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Answer is 400 mg.
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