Math, asked by katrina8, 1 year ago

tell the second part

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Answered by kholanjinathan2003

0

Answer:

Step-by-step explanation:

Since a chalk contains calcium as 10x and carbon as 3x and oxygen as 12x by weight

Percentage of carbon is

( Weight of carbon/total weight) ×100

=(3x/25)100

=12%

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