Question

Chalk contains 10% calcium, 3% carbon and 12% oxygen. Find theamount of carbon and calcium (in grams) in122kg of chalk

Answer 1

Step-by-step explanation:

Percentage of calcium a chalk contains is = 10%

Percentage of carbon it contains = 3%

precentage of oxygen it contains = 12%

weight of the chalk is = 122kg

amount of carbon present in it is = 3% of 122kg

= 3/100×122

= 3.66g

amount of calcium present in it is = 10% of 122kg

= 10/100×122

12.20g

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