A 0.120 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.18° in a 1-dm sample container. The molar mass of the compound is 126.0 g/mol.
What is the observed rotation of 100 mL of solution that contains 0.01 mole of D and 0.005 mole of L? Assume a 1-dm path length