Question

Chalk contain 3%of carbon 10 % of calcium and 12% of oxygen find the quality of each of 2 substance in 1 kg of chalk in grams
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Answer 1

Heyaa !!

☆ Answer ☆

The amount of chalk =1 kg=1000 g

We have,

Amount of carbon in it =3% of 1000 g

=(3/100)×1000

=(3×10)

=30 g

Amount of calcium in it =10% of 1000 g

=(10/100)×1000

=(10×10)

=100 g

Amount of oxygen in it =12% of 1000 g

=(12/100)×(1000)

=(12×10)

=120 g

Hope it helps

Answer 2

Answer:

From the question,

The amount of chalk =1 kg=1000 g

We have,

Amount of carbon in it =3% of 1000 g

=(3/100)×1000

=(3×10)

=30 g

Amount of calcium in it =10% of 1000 g

=(10/100)×1000

=(10×10)

=100 g

Amount of oxygen in it =12% of 1000 g

=(12/100)×(1000)

=(12×10)

=120 g

Step-by-step explanation:

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