Ihave the question
how many moles of cao are produced as 0.248 moles of caco3 (s) is heated?

0.248 moles of CaO are produced.

Explanation:

Moles of calcium carbonate = 0.248 moles

According to reaction, 1 mole of calcium carbonate gives 1 mole of calcium oxide and 1 mole of carbon dioxide.

Then 0.248 moles of calcium carbonate will give:

of calcium oxide

0.248 moles of CaO are produced.

you did not give any options thus this is the best answer i can give to you with this little information you have given

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