Dutch analyzed an enantiomerically pure sample of MacGuffinol by optical polarimetry. To that effect, he dissolved 0,5207 grams of his sample in 8,50 mL of dichloromethane. With his solution, he filled the analysis cell to a height of 16,0 centimeters; analyzing it, he obtained a value of 3,70 degrees. What is the specific rotation of MacGuffinol? Dillon is analyzing a sample of home-made testosterone ([a] =+109, MM-288.42 g/mol). While analyzing a 0,01918 M solution of his sample in a 18,1 cm long cell, he records an angle of rotation of +0,230. What fraction (in percent) of his sample is made-up of the (-) enantiomer?