How many molecules are there in 9.34 grams of LiCL

Assuming the question refers to LiCl (Lithium chloride) which has a molecular weight 42.39. Avogadro's constant states there are 6.022 141 79x1023 molecules per mole 9.34 g LiCl is 9.34/42.39 mole (0.220 mole) LiCl

The number of molecules is therefore 6.022 141 79x1023x 0.220 = 1.326x1023 molecules