The Mole PDF

The Mole Definitions:     A Mole: A mole of a substance is the amount of that substance that contains as many particles (atoms, molecules, or ions) as there are atoms of 12C in 12g of 12C. Avagadro’s Law: Equal volumes of gases, under the same conditions of temperature & pressure, contain equal n...

The Mole Definitions:     A Mole: A mole of a substance is the amount of that substance that contains as many particles (atoms, molecules, or ions) as there are atoms of 12C in 12g of 12C. Avagadro’s Law: Equal volumes of gases, under the same conditions of temperature & pressure, contain equal numbers of molecules. 1 mole = 6 x 1023 atoms or molecules or ions s.t.p. = standard temperature & pressure  @ stp:  1 mole = 22.4L = 22,400cm3  Standard temp = 273K  Standard pressure = 101325 Pa Key Formula : moles x Mr = Mass (in grams) Very Useful For Converting to Moles(memorise)