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Consider an atom confined to a linear cavity of length 2.0 nm inside a molecular sieve material. From a quantum-chemical point of view, this system can be representative of a particle in a one-dimensional box. Determine the spacing, ΔE, between energy levels E1 and E2 (in J) for the case where trapped atom is (a) 3He and (b) 129Xe.
How many grams of this acid will be required to titrate 45.0 mL of 0.18 M NaOH solution? H2C2O4 + 2NaOH > 2 Na^+ + C2O4^-2 + 2 H2O
At a pressure of O2 of 1.00atm, the mole fraction of dissolved O2 in water is 1.6x10^(-5) at 333 K. What mass of O2 (MM = 32.0) can dissolve in 250 g of water under 0.21atm of O2 pressure at 333 K
Is the reaction exothermic or endothermic? b) Calculate the heat produced when 10.0 g of AlCl3 forms. c) How many grams of Al are required to produce 1.00 kJ of energy?
Explain how many ml of .250MNaOh will it take to neutralize 10.0ml of .100M hydrochloric acid (HCL). Explain how many ml of .250MNaOH will it take to neutralize 10.0ml of .100M hydrofluric acid (HF)
a volume of 18.0 l nbspcontains a mixture of 0.250 mol n2 0.250 mol o2 and an unknown quantity of he. the
3.24 x 10-3 g of a protein was dissolved in water (total vol. of 5.00 mL). Given the osmotic pressure of the solution was 1.50 x 10-3 atm and the temperature is 298.0K, calculate the molar mass of the protein.
NO+ and NO- are also known. Compare the bond orders of these ions with the bond order of NO. Which of the three would you predict to have the shortest bond? Why?
a coal-burning power plant generates electrical power at a rate of 500 megawatts that is 500 x 10 to the 6th power pr
Write a balance chemical reaction showing that Ru2+ disproportionates in aqueous acid. calculate standard potential and the Gibbs Free Energy for the reaction.
how does its vapor pressure change over time? It continues to steadily increase. It increases at first, then remains constant
question the heat of vaporization of ccl2f2 is 289 jg.what mass of this substance must evaporate in order to freeze
Calculate the equilibrium constant for the reduction of bismuth from the Bi(III) tetrachloro ion to the elemental metal.
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