Chemistry, 18.05.2021 22:10 babyboogrocks5572
According to the Bohr model, electron's travel through circular orbits. However
according to the electron cloud model, where are the electrons located? *
A:Electrons are located in nucleus
B:Electrons are located in variously shaped orbitals (s, p,d, f) and form a "cloud" around the nucleus
C:Electrons are located in solidly shaped orbitals (s, pdf) These are solid structures
inside the atom.
D:Electrons travel randomly all over the atom.
Answers: 3
Chemistry, 22.06.2019 00:30, shadekashakay
Asolution of sodium hydroxide was titrated against a solution of sulfuric acid. how many moles of sodium hydroxide would react with 1 mole of sulfuric acid?
Answers: 2
Chemistry, 22.06.2019 05:30, MansellS5529
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 12:30, Svetakotok
Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?
Answers: 2
According to the Bohr model, electron's travel through circular orbits. However
according to the el...
Mathematics, 11.10.2021 14:40
Mathematics, 11.10.2021 14:40
English, 11.10.2021 14:40
Mathematics, 11.10.2021 14:40
Mathematics, 11.10.2021 14:40
Physics, 11.10.2021 14:40
Mathematics, 11.10.2021 14:40
Mathematics, 11.10.2021 14:40
Mathematics, 11.10.2021 14:40