Question

Chalk contains 10% calcium, 3% carbon, 12% oxygen and the remaining sand.
Find the amount of carbon and calcium (in grams) in 2 kg of chalk. Also find
the amount of sand (in kg).​

Answer 1

Step-by-step explanation:

oxygen and the remaining sand.

Find the amount of carbon and calcium (in grams) in 2 kg of chalk. Also find

the amount of sand (in kg).

Answer 2

Answer:

Percentage of calcium in chalk = 10% Percentage of carbon in chalk = 3% Percentage of oxygen in chalk = 12% Weight of chalk = 2 1/2 kg = 5/2 kg = 2.5 kg x 1000 g = 2500 gm Amount of carbon in chalk = 3% of 2500 g = 3/100 x 2500 = 25 x 3 = 75 g Amount of calcium in chalk = 10% of 2500 g = 10/100 x 2500 = 10 x 25 = 250 g Hence, amount of carbon and calcium are 75 g and 250 g respectively.Read more on Sarthaks.com - https://www.sarthaks.com/794923/chalk-contains-calcium-carbon-12-oxygen-find-the-amount-carbon-calcium-grams-2kg-chalk