Chemistry, 28.05.2021 16:40 Rosy1234Locks
WILL MARK BRAINLIEST PLS HELP!!
Answers: 2
Chemistry, 22.06.2019 02:30, drivinghydra
What is the relation between concentration of reactants and the rate of chemical reaction?
Answers: 1
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, 23.06.2019 08:30, lowkstahyna
What percentage of energy used in the u. s is produced from fossil fuels
Answers: 2
Chemistry, 23.06.2019 10:30, oglejack6138
How is it possible for someone to put an ear to a wall and hear someone in the next room? a. sound waves can travel though solids. b. the waves travel from room to room via air. c. there must be some air in the wall so the sound can travel through it. d. sound waves change to electromagnetic waves and then back again.
Answers: 1
WILL MARK BRAINLIEST PLS HELP!!
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