Chemistry, 14.07.2019 12:30 adriana238
How many atoms of silver would be produced if 100 grams of copper reacts with an excess of silver nitrate cu + 2 agno3 -> cu(no3)2 + 2 ag
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Chemistry, 22.06.2019 05:00
Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.
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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, 23.06.2019 00:30
•hydration •dissociation •dissolving which one goes to which
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Chemistry, 23.06.2019 02:00
The point along a planet's orbit where it is closest to the sun is called the
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How many atoms of silver would be produced if 100 grams of copper reacts with an excess of silver ni...
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