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13. Chalk contains 10% calcium,3% carbon,and 12% oxygenFind the amount (ingrams) ofthese compounds in 1 kg of chalk.

Answer»

1kg=1000gram

1. Calcium(10%)= (10/100)*1000=100 gram

2.carbon (3%)= (3/100)*1000=30 gram

3. oxygen (12%)=(12/100)*1000= 120 gram



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