Empirical mass = ??. Just add up the atomic masses of each element from the periodic table.
molar mass = empirical mass x a number.
How do you find the number? It is 97.1/empirical mass and round that to a whole number. You will note that the problem lists the molar mass as "about" 97.1 so when you divide you will get a number something like 1.07 or 2.05 or 4.94 and you would round those to 1.00 or 2.00 or 5.00 and that is the number to be used. That number x empirical mass = molar mass (or formula mass).
3.Empirical formula is C4H5N2O.Its molecular weight is 194.19g/mole.The "empirical formula weight is about 97.1g/mole.What is the molecular formula ?
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