Chemistry, 04.10.2021 18:00 mackenziemelton26
PLEASE HELP WITH THIS 3 liquids are out into a container - each liquid has a volume of 10ML. Liquid "A" has a mass of 20 g. Liquid has a mass of 10 g and liquid "C" has a mass of 5 g. Calculate the densities of each and put in order from bottom to the top of the container
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Chemistry, 21.06.2019 22:30
Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?
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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 07:30
In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?
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Chemistry, 22.06.2019 08:00
What are the similarities of physical and chemical change ?
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PLEASE HELP WITH THIS
3 liquids are out into a container - each liquid has a volume of 10ML. Liqui...
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