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In the Bohr model, the potential energy of a hydrogen atom in the nth orbit has a value we will call Un. What is the potential energy of a hydrogen atom when the electron is in the (n+1)th Bohr orbit? (Give your answers in terms of Un and n.)
In the formation of an acetal one mole of aldehyde requires which of the following? a. one mole of alchol b. two moles of alcohol c. one mole of alcohol and one mole of water d. two moles of water
a helium-filled weather balloon is launched from the ground where the pressure is 752 mmHg and the temperature is 21 degrees celsius. under these conditions its volume is 75.0 L.
The following reaction is for solvolysis of t-butyl chloride. Show mechanism for the formation of the major and minor products. (CH3)3CCl + H2O--------(CH3)3COH+(CH3)2=CH2
What are the main differences between the Friedel-Crafts alkylation and Friedel-Crafts acylations? Predict the Friedel-Crafts acylation products of the Lewis acid-catalyzed reaction of acetyl chloride
How much energy is required to vaporize 48.7 g of dichloromethane (CH2Cl2) at its boiling point, if its ?Hvap is 31.6 kJ/mol?
what is the molarity of all solutes in this solution. what is the osmotic pressure of the solution at 25 C. assume total dissociation of NaCL.
At a particular temperature the equilibrium constant for the reaction: H2(g) + F2(g) ? 2HF(g) is K = 36.0. A reaction mixture in a 10.00-L flask contains 0.42 moles each of hydrogen and fluorine gases plus 0.15 moles of HF.
She drinks a lot of water and has consume milk of magnesia(ph value 10.5) before she feels comfortable again. State the pH values of water and blood and whether its acidic or alkaline.
Given 217 mL of a buffer solution that is 0.46 M formic acid and 0.27 M sodium formate, calculate the pH of this solution after the addition of 2.8 mL of 6.3 M hydrochloric acid. The Ka of formic acid is 1.8x10-4
Which of the following is the most feasible reagent for oxidizing silver(i) to silver(ii): diflourine, flouride ion, diiodide, iodide ion?
Methane and oxygen react in presence of a catalyst to form formaldehyde (desired product). In a parallel reaction, methane is oxidized to form carbon dioxide and water
The student then adds water to the flask dissolving the sugar the mass is now 204.274g. calcuate the density of this solution
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