Math, asked by jhunubehera379, 11 months ago

chalk contains 10% calcium 3% carbon and 12% oxygen find the amount of carbon and calcium in(grams)in to 2 1\2 kg of Chalk

Answers

Answered by namirairam05

7

Answer:

chemical formula of chalk (calcium carbonate )= 40+12+48= 100g

10% Ca= 10/ 100 X 100 = 10g

3% C = 3 / 100 X 100 = 3g

12% O = 12 / 100 X 100 = 12g

amount of carbon in 2.5 kg chalk

250g chalk = calcium is 25g

carbon is 7.5 g

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