Calculate (i) the percentage of oxygen in lime stone(ii) the percentag

1.	Calculate (i) the percentage of oxygen in lime stone(ii) the percentage of sodium in washing soda
Answer» Calculate: I.the PERCENTAGE of oxygen in LIME stone :•in limestone, 40% is calcium and the rest is carbon and oxygen. (ii) the percentage of sodium in washing SODA :•From the chemical formula, washing soda contains 10 molecules of water. Hence, 62.9% of the water of crystallization in washing soda CRYSTALS.

Calculate (i) the percentage of oxygen in lime stone(ii) the percentage of sodium in washing soda

Answer»

Calculate:

I.the PERCENTAGE of oxygen in LIME stone

:•in limestone, 40% is calcium and the rest is carbon and oxygen.

(ii) the percentage of sodium in washing SODA

:•From the chemical formula, washing soda contains 10 molecules of water. Hence, 62.9% of the water of crystallization in washing soda CRYSTALS.