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Calcium oxide or quicklime CaO is used in steel making, cement manufacturing, and pollution control processes. It is prepared by the thermal decomposition of calcium

Calcium oxide or quicklime CaO is used in steel making, cement manufacturing, and pollution control processes.

It is prepared by the thermal decomposition of calcium carbonate.

C a C O_{3} (s)

CaO

(s) + C O_{2} (g)

Calculate the yearly release of

C O_{2} (

k g)

to the atmosphere if the annual production of CaO in Sri Lanka is approximately

18

ktonne.

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