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Some atomic properties depend on the average value of 1/r rather than the average value of r itself. Evaluate the expectation value of 1/r for a hydrogenic helium 1s orbital.
What is the velocity of a first-order reaction when the reactant concentration is 6 x 10-2 M and the rate constant is 8 x 103 sec-1?
A 335 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 628 mmHg. Calculate the moles of Ar present.
Why does the same amount of liquid when left in a wider and flatter container evaporate quicker than when left in a narrower and deeper container?
Barium metal crystallizes in a body centered cubic lattice. the unit cell edge length is 502 pm and the density of the metal is 3.50g/cm3. using the information, calculate the avogadros number. assume 68% of the unit cell is occupied.
Compare and contrast the major products of dehydrohalogenation of 2-chloro-4-methylpentane with (a) sodium ethoxide in ethanol and (b) potassium tert-butoxide in 2-methyl-2-propanol (tert-butyl alcohol).
At 0.0oC, if the volume of air is 3.4 mL and the pressure of the atmosphere that day is 695 mmHg, what is the number of moles of air?
Acid-base titration & analytical chemistry, A 0.213-g sample of uranyl(VI)nitrate, UO2(NO3)2, is dissolved in 20.0 mL of 1.0 M H2SO4 and shaken with Zn. The zinc reduces the uranyl ion, UO2 (with a charge of 2+)
Show the complete hydration reaction for 3-octane. Use the condensed structural to show reactants
At equilibrium, the concentration of the product methanol was found to be 0.060 M. The value of the equilibrium constant Kc for this reaction is
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
Calculate the theoretical yield of C2H5Cl when 138 g of C2H6 reacts with 244 g of Cl2, assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
Explain the steriochemisty of gyceraldehyde and glycerol, give reasons for absence of anomeric forms in sucrose
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