Answer:Obtain the mass of each element present in grams. Element % = mass in g = m.
Explanation:Generally speaking, in empirical formula problems, C = 12, H = 1, O = 16 and S ... 7) Use the scaling factor computed just above to determine the molecular formula: ... found to contain 64.80 % carbon, 13.62 % hydrogen, and 21.58 % oxygen by weight. ... 1) Percents to mass, based on assuming 100 g of compound present:.