Some Basic Conc...

Calculate the % composition of Carbon in $$CO_2$$. Molar mass is 44.01.

A solution is prepared by dissolving 60 g of sodium chloride in 400 g of water. What is the mass-by-mass percent of sodium chloride in this solution?

The mass of a sand and powdered mixture along with a beaker is 56 g. If the mass of the dried mixture is 20 g, find the % composition of the mixture in 100 g?
(weight of beaker = 20 g).

Which law was given by Antoine L. Lavoisier?

If the % composition of a 'x' component is 35%, find the mass of the dried 'x' component in 100g? mixture + beaker = 50 g, mass of beaker = 23 g

A sealed tube containing phosphorus was weighed and heated carefully. After completion of the reaction, the tube was re-weighed under similar conditions. The weight of the tube will:

According to Dalton, atom combines in a _________ ratio to form compounds.

Determine the percentage composition of $$K$$ in $$KMnO_4$$.

If the % composition of Cl in HCl is 46%, what is the mass of Cl in HCl?

Law of conservation of mass is also known as :