A sample of CaCO3 was heated, causing it to form CaO

and CO2 gas. Solid CaO remained behind, while the CO2
escaped to the atmosphere. If the CaCO3 weighed 612 g
and the CaO weighed 343 g, how many grams of CO2 were
formed in the reaction?

Is the answer 269 grams of CO2?

1 answer

yes. Good work.

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