Chemistry, 26.06.2020 17:01 LoserMcBadface
What does a complete ionic equation look like? A. All ionic substances are written as separate ions in solution. B. All ionic substances are written with the state symbol (aq) after it. C. All substances are written as ionic compounds bonded together. D. All substances are labeled with the oxidation states of the atoms.
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 17:00
How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process
Answers: 1
Chemistry, 22.06.2019 17:00
Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness
Answers: 1
What does a complete ionic equation look like? A. All ionic substances are written as separate ions...
Mathematics, 07.06.2020 18:57
Chemistry, 07.06.2020 18:57
Mathematics, 07.06.2020 18:57
Mathematics, 07.06.2020 18:57
Mathematics, 07.06.2020 18:57
Mathematics, 07.06.2020 18:57
Mathematics, 07.06.2020 18:57
Biology, 07.06.2020 18:57
Mathematics, 07.06.2020 18:57
Business, 07.06.2020 18:57
Mathematics, 07.06.2020 18:57