In the cement production, the decomposition of calcium carbonate happen in the kiln which generates calcium oxide that r

[answerhappygod]

In the cement production, the decomposition of calcium carbonate
happen in the kiln which generates calcium oxide that reacts to
other components in the feed to form clinker. One metric ton of raw
materials containing 60% calcium carbonate is fed to a kiln that
operates at 90% conversion. Before the clinker is formed, what is
the %calcium oxide (by weight) is present in the mixture after
calcination? Give your answer in whole number percentage. Use Ca=
40.01, C = 12.01, O = 16.00