Answers: 2
Chemistry, 22.06.2019 03:00
Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?
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 09:00
Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?
Answers: 1
Chemistry, 22.06.2019 09:10
When a nucleus absorbs a neutron and then breaks apart, there are many products of the reaction. what is not a product of a nuclear fission reaction
Answers: 1
Please help! science 10 acid and bases!
Complete and balance the following neutralization reactions...
Mathematics, 25.02.2020 02:32
Mathematics, 25.02.2020 02:32
Mathematics, 25.02.2020 02:32
Mathematics, 25.02.2020 02:32
History, 25.02.2020 02:32
Mathematics, 25.02.2020 02:32
Mathematics, 25.02.2020 02:32
Mathematics, 25.02.2020 02:32