If the concentration of a standard, the absorbance of that standard and the absorbance of an unknown solution are known, the concentration of the substance in plasma (unknown) can be calculated. Calculate the concentration of cholesterol from a fasting sample of my blood given that a 20 microliter sample of my plasma in 2.0 ml reagent gave an absorbance reading of 0.39, while a 20 microliter standard with a concentration of 200 mg/dl in 2.0 ml of reagent gave an absorbance reading of 0.49. Calculate my cholesterol concentration and tell me if it is in the normal range cited by Fox. Group of answer choices

The p sub shell can hold up to 8 electrons in an atom. true or false?

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.