Calculate the number of atoms in `39.4 g` gold.Molar mass of gold is 197 g / mole

Calculate the number of atoms in 52 g of Helium (He)

Calculate the number of atoms in 52 moles of Argon (Ar)

When gold crystallizes, it forms face-centred cubic cells. The unit cell edge length is 408 pm. Calculate the density of gold. Molar mass of gold is 197 g/mol.

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

Calculate the number of atoms in each of the following 52 moles of Ar

Calculate the number of moles in the following: Mass of 3.5 g of hydrogen

Calculate the number of atoms of C,H and O in 72.5 g isopropanol, C_3 H_7 OH (molar mass 60).

Calculate number of atoms of hydrogen present in 5.6 g of urea (molar mass of urea = 60 g moI^-1 ).Also calculate the number of atoms of N,C and O.

Calculate the number of atoms in each of the following (Given :Atomic mass of I =127 u) 254 g of iodine (I)