Calculate the following
Number of atoms in 32.0 g `Br_2`

Calculate the following Number of atoms in 7.46 g Li

Calculate the following Number of molecules in 43 g NH_3

Calculate the number of atoms per unit cell of CCP.

Calculate the number of atoms per unit cell of FCC.

Calculate the number of atoms per unit cell of BCC.

Calculate the total number of electrons present in 3.2 g of oxygen gas.

Calculate the number of moles of atoms in 10.2 g of sodium.

Calculate the number of He atoms in (i) 52 u, (ii) 52 g, (iii) 52 moles of He. Atomic weight of He is 4u.

Find the square of the following numbers 32