Question

3) Tu-jin-pi is a root bark used in traditional Chinese medicines for the treatment of athlete’s foot. One of the active ingredients isolated from the bark is known as pseudolaric acid A (PAA), and is known to contain only C, H, and O. A chemist combusted 1.000 g of PAA and found that 2.492 g of CO2 and 0.6495 g of H2O were produced. In a separate experiment, the molar mass of PAA was found to be ~389 g mol-1. Determine the molecular formula of PAA.

Answer 1