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Explain why the boiling point of a two component mixture rises slowly throughout a simple distillation when the boiling-point differences are not large.
if 510 grams of sodium hydroxide reacts, how many grams of magnesium nitrate are needed for complete reaction?
An unknown acid is dissolved in water. The solution is divided into two equal parts and one part is titrated to a phenolphthalein end point with NaOH solution. The two solutions are then mixed and the resulting pH is found to be 3.25. What is the ..
consider two closed containers. container x is a 2 l container that contains 0.5 l of acetone. container y is a 3 l
Suppose you were trying to find a substitute for K+ in nerve signal transmission. Where would you begin your search. What ions would be most like K+? For each ion you propose
We often hear the terms organic, natural, and chemical in the media. Organic and natural are usually used to imply that a product is "healthy" and/or "environmentally friendly" while chemical often implies negative implications for health and for ..
Determine the characteristic wavelengths if an electron are accelerated through an electric potential to a kinetic energy of 18kev.
The most abundant isotope of uranium, ^238 U, does not undergo fission. In a breeder reactor, however, a ^238 U atom captures a neutron and emits two beta particles to make a fissionable isotope of plutonium, which can then be used as fuel in a nu..
aqueous solutions has the strongest ion-dipole attractions: 0.3 M FeBr3, 0.6 M CaCl2, 0.5 M Ba(NO3)2, 0.2 M (NH4)2SO4, 0.9 M KOH.
In calibrating a drop counter, a student had an initial buret reading of 0.41 mL and a final buret reading of 4.71 mL after dispensing 75 drops from a buret.
What is the overall reaction rate order of the reaction in (2)? What is the difference between the (1) and (4)?
At 350 K, Kc = 0.142 for the reaction 2BrCl(g) -> Br2(g) + Cl2(g) An equilibrium mixture at this temperature contains equal concentrations of bromine and chlorine, 0.058 mol/L. What is the equilibrium concentration of BrCl? Answer in units of M.
Calculate the potential energy of interaction between the two electrons in the helium atom when they are separated by a distance of 1 Å. Similarly, what would be the potential energy of one of these electrons if it were alone in the presence of th..
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