Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in the study of nucleic acids. The half-life of P-32 is 14.3 days. What
mass of P-32 is left from an original sample of 175 mg after 43.5 days?

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

Describe the magnitude of the buoyant force