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define empirical formula
the simplest formula for a compound
define molecular formula
the actual number of atoms of each element in a molecule of the compound
whole-number multiple formula
molar mass / empirical formula mass
what is the road map to finding empirical formula
%, mass, mole, mole ration, subscripts
road map to finding molecular formula
%, mass, mole, mole ration, subscripts, whole-number multiplier
write the combustion equation skeleton
CxHy + O2 —> CO2 + H2O