Answers: 1
Chemistry, 21.06.2019 22:10
Which form of relativism states that people rely on their own standards of right and wrong when making a decision?
Answers: 1
Chemistry, 22.06.2019 05:30
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 21:50
If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3
Answers: 2
Chemistry, 22.06.2019 23:00
Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse
Answers: 2
When the electron cloud of a molecule is easily distorted, the molecule has a high...
Mathematics, 29.04.2021 03:40
Mathematics, 29.04.2021 03:40
Mathematics, 29.04.2021 03:40
Mathematics, 29.04.2021 03:40
Mathematics, 29.04.2021 03:40
History, 29.04.2021 03:40
English, 29.04.2021 03:50
Mathematics, 29.04.2021 03:50
Mathematics, 29.04.2021 03:50
Mathematics, 29.04.2021 03:50
Mathematics, 29.04.2021 03:50
Mathematics, 29.04.2021 03:50