please solve question no.12
step by step plzzz
ans fast........
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hope it helps you
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Step-by-step explanation:
given , chalk is 1 kg = 1000g
amount of chalk in carbon = 3/100 *1000
= 30g
amount of calcium in chalk = 10/100*1000
=1oog
amount of oxygen in chalk =12/100*1000
=12og
its the answer .
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