Calculate the mass of sodium which contains same number of atoms as are present in 15g of calcium (at mass of Ca = 40,Na = 23)

Calculate the weight of CO having the same number of oxygen atoms as are present in 22 g of CO2 .

Calculate the mass of 2.5g atom of oxygen

Calculate the mass %of sodium in sodium sulphate (Na2SO4).

Calculate the mass of 1.5gram atoms of calcium?

Calculate the mass of 2.5gram atoms of calcium?

How many grams of oxygen gas contain the same number of molecules as are present in 16 grams of sulphur dioxide ? (Atomic masses : S = 32, O = 16).

An enzyme contain 5.6% Fe, calculate number of Fe atoms present in 1g of enzyme.

An atom has mass number A and atomic number Z. How many neutrons are present in its nucleus ?

An atom has mass number A and atomic number Z.How many protons are present in the nucleus ?

Calculate :The number of atoms,in 46 g of Na