Chemistry, 03.07.2019 12:00 aubreykenzie686
100 points plss harry described two subatomic particles below: particle p: revolves around the nucleus of the atom particle q: charged particle inside the nucleus which of the following statements is correct based on the descriptions of each particle? particle p will repel particle q. particle p is an electron and particle q is a neutron. particle p is greater in number than particle q in a neutral atom. particle p is negatively charged and particle q is positively charged.
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 11:40
Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both
Answers: 2
Chemistry, 22.06.2019 14:10
Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?
Answers: 1
Chemistry, 22.06.2019 17:10
Increasing the substrate concentration in an enzymatic reaction could overcome which of the following? a) the need for a coenzymeb) allosteric inhibitionc) competitive inhibitiond) insufficient cofactors
Answers: 1
100 points plss harry described two subatomic particles below: particle p: revolves around the n...
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