Question

Chalk contains 10% calcium, 3% carbon and 12% oxygen. Find the amount (in grams) of each of these
compounds in 1 kg of chalk.​

Answer 1

Answer:

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Step-by-step explanation:

Total weight of chalk=1kg=1000 g

Quantity of Calcium=1000×10010=100 g

Quantity of Carbon=1000×1003=30 g

Quantity of Oxygen=1000×10012=120 g

Answer 2

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