Can someone me with this crossword?
2. 3rd stage; chromosomes separate
3.osmosis is a...
Chemistry, 22.10.2019 22:10, squawk1738
Can someone me with this crossword?
2. 3rd stage; chromosomes separate
3.osmosis is a form of
4.organelle found only in plant cells
5.dense center portion of nucleus
6.jellylike matrix for organelles
7.material of which chromosomes are made; condenses during prophase
8. forms vesicles; the complex
9. the nuclear membrane is allowing materials o pass through
10. storage/transport sacks in a cell
11. organelle which produces protein
12. sack filled with enzymes; breaks down foreign substances
13. process of cell division
14. type of cell with a long "arm" - the axon
would be much appreciated
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
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