Number of
Protons
Number of
Neutrons
Atomic
Number
Mass
Number...
Answers: 3
Chemistry, 21.06.2019 14:10
Amonoprotic acid is an acid that donates a single proton to the solution. suppose you have 0.140 g of a monoprotic acid dissolved in 35.0 ml of water. this solution is then neutralized with 14.5 ml of 0.110 m naoh. what is the molar mass of the acid?
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 09:30
Which element is the least metallic between cadmium, silver, zinc, or iron?
Answers: 1
Chemistry, 22.06.2019 15:20
Identify arrows pointing to bonding electrons. done h-0-0-h ) intro
Answers: 3
Mathematics, 25.06.2019 07:30
Mathematics, 25.06.2019 07:30
Business, 25.06.2019 07:30
Biology, 25.06.2019 07:30
Mathematics, 25.06.2019 07:30
Biology, 25.06.2019 07:30
English, 25.06.2019 07:30
Biology, 25.06.2019 07:30
Mathematics, 25.06.2019 07:30
History, 25.06.2019 07:30
Biology, 25.06.2019 07:30
Mathematics, 25.06.2019 07:30