Chemistry, 26.01.2021 18:40 ljdavies51
A sample of a compound was found that has 40.25g of (C) Carbon and 59.75g of (O) Oxygen. What is the empirical formula for this sample.
Answers: 3
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 06:00
Match the name of the following compound: mgso4 · h2omagnesium sulfate monohydratemagnesium (ii) sulfate monohydratemagnesium (ii) sulfate hydratemagnesium sulfate hydrate
Answers: 1
Chemistry, 22.06.2019 16:50
Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.
Answers: 3
A sample of a compound was found that has 40.25g of (C) Carbon and 59.75g of (O) Oxygen.
What is th...
History, 22.12.2020 04:40
Mathematics, 22.12.2020 04:40
History, 22.12.2020 04:40
Social Studies, 22.12.2020 04:40
English, 22.12.2020 04:40
History, 22.12.2020 04:50
History, 22.12.2020 04:50
English, 22.12.2020 04:50
Mathematics, 22.12.2020 04:50
Mathematics, 22.12.2020 04:50
History, 22.12.2020 04:50
Computers and Technology, 22.12.2020 04:50