(i) Chalk contains calcium, carbon and oxygen in the ratio 10:3:12. Find the percentage of carbon in chalk.(ii) If in a stick of chalk, carbon is 3g, what is the weight of the chalk stick?

(i) Chalk contains calcium, carbon and oxygen in the ratio 10 : 3 : 12 . Find the percentage of carbon in chalk. (ii) If in a stick of chalk, carbon is 3 g , what is the weight of the chalk stick?

Find the percentage of calcium in calcium carbonate .

Chalk contains 10% calcium, 3% carbon and 12% oxygen. Find the amount of carbon and calcium (in grams) in 2""1/2" kg of chalk.

Find the percentage of calcium in calcium carbonate (CaCO_(3)) .

Find the percentage of calcium in calcium carbonate (CaCO_(3)) .

Find the percentage of calcium in calcium carbonate (CaCO_(3)) .

10g of Calcium carbonate contains

What is the percentage of calcium in calcium carbonate (CaCO_(3)) ?

chalk contains 3% of carbon 10% of calcium and 12% of oxigen find the amount in grams of each of these substances in 1 kg of chalk