in this experiment we have calculated the molar ratios of cl to mn by first determining the mass percentage composition of cl in our product. is it possible to directly calculate the moles of cl and moles of mn from the experimentally determined masses of cl and mn in the product that you isolated? in general, is it more accurate to determine a molar ratio of elements in a compound from the percentage composition of each element in the compound or the measured masses of each element in a compound?