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In the ground state of the Hydrogen atom the energy of the electron is E0 = -13.61 eV. What is the energy of the electron in the ground state of the He+ ion
The pH of 0.325g of aspirin (Molar mass 180.2) tablet in 0.5L water is 3.03, What is the pKa for weak, monoprotic acid aspirin? do not disregard x
Calculate acidity of sample and express in % (w/v) CH3COOH. show complete solutions and please don't cite websites or like
What is the molecularity of the following elementary reaction? NH2Cl(aq) + OH¯(aq) -> NHCl¯(aq) + H2O(l)
The normal freezing point of water H2O is 0.00 oC and its Kf value is 1.86 oC/m. Assuming complete dissociation of the electrolyte,
How much heat is absorbed in the formation of 1.69 mol of NO? Answer units KJ
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water
0.74 L of a 0.41 M solution is diluted to a final volume of 3200 mL. What is the resultant molarity?
1. Why does milk go sour and what causes the formation of curd? 2. Explain why during the experiment casein precipitates wheen hydrochloric acid is added to it.
calculate the Kf for the solvent bromoform: When 28.2 g of C20H42 are dissolved in 173. mL of bromoform, the freezing point of the solution is 5.4 C.
Draw the structure of any D-ketoheptose in the open chain form, and answer the following questions (you must use either Haworth projection or chair conformation in each of the points below)
consider the following equilibrium system H2(g)+ Br2(g)=2HBr(g) Keq= 14.8 A closed container is initially filled with equal moles of H2 and Br2.When equilibrium is reached the (HBr) is 0.329 mol/L What is the initial (H2)
Compute the enthalpy change, for this reaction per mole of solution and A calorimeter has water of 22.0 grams at the temperature of fifteen degree celsisu
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