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A particle confined in a rigid one-dimensional box of length 17 fm has an energy level En = 28.8 MeV and an adjacent energy level En +1 = 45 MeV. What is the value of the ground state energy?
Question- The standard free energy of formation of ammonia is -15.5kJ/mol. What is the value of K for the reaction below at 565.0K
A vertical cylinder has a 10kg frictionless piston 5cm in radius. Inside the cylinder are 10 mols of helium at 2 bar and 300k. The piston is held in place with a pin. When the pin is pulled the piston rapidly rises until it can go no higher.
What is the pressure in millimeters of mercury of 0.0100 mol of helium gas with a volume of 211 mL at a temperature of 50^circ C?
explain the fact that acetic acid can be extracted quantitatively from an ether solution by dilute sodium hydroxide
calculate the heat change at 100c in each of the following problems. indicate whether heat was absorbed or released.a.
You have 10 mL of .2 M sodium acetate and 1 mL of .1 M HCl, and 9 mL distilled water. Divide the solution in half In one half, add .5 mL .1 M HCl, the other half, add .5 mL .1 M NaOH. Calculate the pH before the two additions and after.
How do you find the thickness of a piece of tinfoil in atoms with only the piece of foil, metric rulers, metric balance and a graduated cylinder
calculate the theoretical and percent yields if 934 grams of sucrose c12h22o11 react and 493 grams of ethanol c2h5oh
Conductivities are often measured by comparing the resistance of a cell filled with the sample to its resistance when filled with some standard solution, such as aqueous potassium chloride. The conductivity of water is 76 mS m^?1 at 25°C
Air having an initial Mach number of 2.4, a freestream static pressure of 105 P a and a static temperature of 270°K is deflected by a wedge through an angle of 10° .
The insect repellent DEET is an amide that can be made from 3-methylbenzoic acid and diethylamine. A 5.6 fl oz can of DEET repellent contains 25% DEET by mass (1 qt = 32 fluid ounces).
which is connected to 2 oxygen atoms, one with is sp^3 and one sp^2 hybridized and so both oxygens have 2 lone pairs of electrons. All other single bonds consist of hydrogen.
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