Chemistry, 19.05.2020 22:16 chynahbug5676
Which fossil is most likely a modern horse
Answers: 2
Chemistry, 21.06.2019 16:00, shamayajohnsonsh5
One of the cell membrane's functions is to protect the cell keep wastes in the cell create new cells keep light out of the cell
Answers: 1
Chemistry, 21.06.2019 19:30, itzyagirlshy
Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)
Answers: 1
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
Which fossil is most likely a modern horse...
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