Which of the following best explains why negative urine is needed for toxicologists? O To observe what a sample behaves like when a drug is not present
To analyze what odor a sample gives off
To establish what drugs could potentially be in the sample
To understand if the drugs within a sample are legal or illegal

An enzymatic hydrolysis of fructose-1-p, fructose-1-p(aq) + h2o(l) - fructose (aq) + pi (aq) was allowed to proceed to equilibrium at 25°c. the original concentration of fructose-1-p was 0.2 m, but when the system had reached equilibrium, the concentration of fructose-1-p was only 6.52 x 10^-5 m. calculate the equilibrium constant for this reaction and the free energy of hydrolysis of fructose-1-p.