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How would the separation of the grape soda dyes work equally well if you reversed the order of IPA concentrations and utilized 20% IPA first to remove the blue dye and then switched to 5% IPA to remove the red dye? Define what you would expect to happen if you reversed the order of solvents in this separation.
What impurity is most likely to be presented in the sample of aspirin you prepared? Wjat effect would this impuruty have if the product were intended forhuman consumption
How many grams of ethylene glycol dissolved in 3.55 kg of water needed to lower the freezing point of water to -22.0 c? Kf1.86 c kg/mol
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 8.10 nm in diameter?
Two liters of argon gas at 300 K and 5 atm are expanded against a constant opposing pressure of 1 atm until mechanical equilibrium is achieved.
Ammonium Chloride and sodium hydroxide. Sodium cyanide and ammonium bromide. Potassium hydrogen sulfate and lithium acetate. Ammonia hypochlorite and ammonia
Benzyl bromide reacts rapidly with sodium iodide in acetone, and also reacts rapidly with ethanol and silver acetate. Bromobenzene doesn't react under either of these conditions. Explain.
The activation energy for a particular reaction is 64 kJ/mol. By what factor will the rate constant increase when the temperature is increased from 50 oC to 80 oC
calculate the mass of the sodium. The vapor pressure of water is 23.8 mm Hg at 25.0°C. Use molar masses with at least as many significant digits as the data given.
the following reaction is carried out in a closed vessel.2 nog cl2g ---gt 2 noclgif the partial pressure of no is
A 1.996 gram sample of unknown monoprotic acid is dissolved in some water. This acid solution is then titrated to the end point with 27.38 mL of a solution of 0.4165 M KOH.
For our experiment we put 5 mL of red Kool-Aid in an empty 25 mL volumetric flask, we then slowly added water until it reached the 25 mL mark in the flask and recorded our observations. Obviously the red Kool-Aid was diluted by the water making it..
use the concept mof electron configuration to explain why the number of valence electrons in metals tend to be less the number in most nonmetals.
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