A sample of iron has a mass of 1.68 g. calculate the number of atoms of iron in the samples.

Calculate the number of atoms in 46g of He.

Calculate the total number of atoms in 18g of water.

Calculate number of atoms in 0.05g of water .

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

Calculate the mass of 2.5g atom of oxygen

A ballon has 5.0 g mole of helium at 7^@C calculate the number of atoms of helium in the ballon.

Calculate the number of atoms in each of the following 52g of He

Calculate number of gram atoms in 103g of KOH.

Calculate number of gram atoms in 669.6 g of iron?

A sample of sodium has a mass of 46g. What is the mass of the same number of calcium atoms as sodium atoms present in given sample ?