Calcium oxide or quicklime (cao) is used in steelmaking, cement manufacture, and pollution control. it is prepared by the thermal decomposition of calcium carbonate: caco3(s) → cao(s) co2(g) calculate the yearly release of co2 (in kg) to the atmosphere if the annual production of cao in the united states is 8.6 × 1010 kg.

The yearly release of into the atmosphere is .

Explanation:

Annual production of CaO =

Moles of CaO :

According to reaction, 1 mole of CaO is produced along with 1 mole of carbon-dioxide.

Then along with   of CaO moles of carbon-dioxide moles produced will be:

of carbon-dioxide

Mass of moles of carbon-dioxide:

The yearly release of into the atmosphere is .