Atoms and molecules
33.Mass of 1 mole of a substance is called its molar mass
34.Atoms of different elements are of different sizes and masses. A mole of one type of atoms will have a different mass from a mole of another type of atoms
35. Molar mass = Mass of one mole of any substance = Gram atomic mass or gram molecular mass or gram formula mass of the substance
36. Number of moles = Given number of particles/Avogadro’s number
37.Molar mass is expressed in g/mol
38. Atomic mass of an element expressed in grams is called gram atomic mass
39.Molecular mass of a substance expressed in grams is called gram molecular mass
40.Mass of one mole of atoms of any element is equal to gram atomic mass of that element
0 Comments