Which has more number of atoms, 100 gram of sodium or 100 gram of iron ( given atomic mass of Na= 23 u, Fe=56u)?

Calculate the number of moles of phosphorus atoms (P) in 100 g of phosphorus (Atomic mass of P = 31)

Calculate the number of moles of phosphorus atoms (P) in 100 g of phosphorus (Atomic mass of P = 31)

Calculate number of gram atoms in 669.6 g of iron?

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).

A vessel contains two non-reactive gases, neon (monatomic) and oxygen (diatomic). The ratio of their partial pressures is 3.2. Estimate the ration of (i) number of molecules and (ii) mass density of neon and oxyge in the vessel. Atomic mass of Ne- 20.2 u, molecular mass of O_2 = 32.0 u.

Sodium crystallizes in i bcc unit cell. CaICulate the approximate no. of unit cells in 9.2 grams of sodium. (Atomic mass of Na = 23 u).

What is the mass in grams of each of the following : 6.023xx10^23 atom of P? (atomic mass: P=31).