Answers: 3
Chemistry, 21.06.2019 22:00
During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.
Answers: 2
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 12:50
The number at the end of an isotope’s name is the number.
Answers: 1
Chemistry, 22.06.2019 13:20
Can someone me with 3 and 4 plz. this is for masteries test.
Answers: 2
Write a balanced chemical equation for the reaction of the selected buffer component and the hydroge...
Mathematics, 23.10.2020 18:30
Mathematics, 23.10.2020 18:30
Social Studies, 23.10.2020 18:30
Social Studies, 23.10.2020 18:30
Social Studies, 23.10.2020 18:30
Mathematics, 23.10.2020 18:30
English, 23.10.2020 18:30
History, 23.10.2020 18:30
Biology, 23.10.2020 18:30
English, 23.10.2020 18:30
Mathematics, 23.10.2020 18:30
Mathematics, 23.10.2020 18:30
Mathematics, 23.10.2020 18:30
Chemistry, 23.10.2020 18:30