I only need help answering #3, the first two I was able to figure out on my own.
ID: 484873 • Letter: I
Question
I only need help answering #3, the first two I was able to figure out on my own.
Estradiol has a molar mass of 272.4 g/mol. Determine the molarity of your unknown sample. 1.31 times 10^-9 mol/L Other molecules that are commonly measured in the blood are urea and glucose. Determine the molarity of a typical urea (60.1 g/mol) value of 50 mg/dL. 8.32 times 10^-3 mol/L Compare the molarities of estradiol and urea in blood and comment on the difference in sensitivity of an immunoassay as compared to a spectrophotometric assay such as is done for urea.Explanation / Answer
Q3.
relate:
(1.31*10^-9)/(8.32*10^-3) = 1.57451*10^-7 times!
i.e. = (1.57451*10^-7)^-1 = 6351182.2725
therefore
the 1st specie is much mre sensitive, since we can detect up to 10^-9 limits