a 2.255 - g sample of a mistur

timer Asked: Oct 8th, 2015

Question description

a 2.255 - g sample of a misture of CaCO3 and CaO was heated to completely decompose the CaCO3. After heating, the sample weighed 1.860 g. What was the percent by weight of CaCO3 in the sample. I know the answer but I don't know how to work it out. thanks.

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