Chemistry
Calculate the number of moles and molecules in 19.86 g. of Pb(NO3)2. [Pb = 207, N = 14, O = 16]
Related Questions
Calculate the mass of Na which will contain 6.023 × 1023 atoms. [Na = 23]
Calculate the no. of atoms of potassium present in 117 g. of K. [K = 39]
Calculate the mass of an atom of lead [Pb = 202].
Calculate the number of molecules in 1½ litres of water. [density of water 1.0 g./cc. ∴ mass of water = volume × density]