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Chemistry, 28.02.2020 03:25 Trumpman137
Water can be formed from the synthesis reaction of hydrogen with oxygen
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Chemistry, 22.06.2019 04:30
Why are people not able to scuba dive in the deep part of the ocean
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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.
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Chemistry, 22.06.2019 09:20
Sugar is dissolved in water. which is the solute? sugar neither both water
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Chemistry, 22.06.2019 15:00
How is the shape of the poem “peer” connected to its meaning?
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Water can be formed from the synthesis reaction of hydrogen with oxygen
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Advanced Placement (AP), 26.09.2019 16:10