Moles Flashcards
moles of an element equation
moles of an element = mass/R.A.M
what is a mole?
is a particular measure of an amount of substance
moles of a compound equation
mass/R.M.M
moles of a gas equation
volume in cm3/24 000 or volume in dm3/24
moles in solution equation
molarity (moldm-3) x volume (cm3) / 1000
how do you work out the empirical formula if given a mass or percentage?
divide by the R.A.M then divide by the smallest to give whole numbers
how do you work out the molecular formula?
you work out the empirical formula R.A.M and divide by the R.A.M of molecular formula and multiply by factor
what is the equation for calculating percentage yield?
percentage yield = amount of product produced / max amount of product possible x 100
volumetric / titration calculation
moles = molarity x volume/1000
