C4h10(l) and c4h10(g); match the words in the left column to the appropriate blanks in the sentences on the right. blank will have the higher standard entropy at 25 ∘ c . will have the higher standard entropy at 25 ∘c. this can best be explained because this can best be explained because blank..
Answers: 2
Chemistry, 22.06.2019 05:30, MansellS5529
A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.
Answers: 1
Chemistry, 22.06.2019 11:50, bellojamilet410
What substance has a mass of 9.5g and volume of 2.1cm^3
Answers: 2
C4h10(l) and c4h10(g); match the words in the left column to the appropriate blanks in the sentence...
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