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The energy of a vibrating molecule is quantized much like theenergy of an electron in the hydrogen atom. The energy levels of avibrating molecule are given by the equationE_n = (n + 1/2)hvwhere n is a quantum number with possible values of 1, 2,...and vis the frequency of vibration. The vibration frequency of HCl isapproximately 8.85*10^13 s^- 1.
What minimum energy is required to excite a vibration in HCl?
A metal sulfide is 71.6% metal by mass. What is the mass fraction of the metal in the metal sulfide?
Chemical-plant equipment costs rarely vary in proportion to size. In the simplest case, cost C varies with size S according to the allometric equation 18 Chemical Engineering Thermodynamics C = ?S?
burning 480 cm3 of propane measured at r.t.p,caused the temperture of 250 cm3 of water to increase by 42.5 celsius. calculate the heat of combustion of propane.
The molar heat capacity of SO2 is given by the following equation: Cpm= 3.093 + 6.967x10^-3 T/K -45.81x10^-7 T^2/k^2 + 1.035x10^-9 T^3/K^3. Calculate delta S for the heating of 1 mol of SO2(g) from 75C to 1350C at a constant pressure of 1 bar
24 mL of 0.25 M NH3 solution is titrated with 0.40 M HNO3 solution, calculate the pH of the solution when 10 ml of HNO3 is added. Kb(NH3)=1.8*10^-5.
bone was dissolved in hydrochloric acid giving 45.0 ml of solution containing calcium chloride cacl2. to precipitate
according to le chateliers principle, what is the effect on the products when N2 is added to the equilibrium mixture of each of the following reactions? a)2NH3(g) 3H2(g)+N2(g). b)N2(g)+O2(g) 2NO(g). c)2NO2(g) N2(g)+2O2(g). d)4NH3(g)+3O2(g) 2N2(g)+..
Using the periodic table only, arrange the members of each of the following sets in order of increasing bond strength.
For a van der Waals gas, use the thermodynamic equation of state to find [dU/ dV]T. Compare your result to the corresponding value of the same derivative for an ideal gas. Explain the difference.
The amount of calcium in a 15.0-g sample was determined by converting the calcium to calcium oxalate, CaC2O4. The CaC2O4 weighed 12.8 g. What is the percent of calcium in the original sample
I know it is a dilution problem but I am lost other than that. Please help. The concentrations and final volumes were given in a table and paired by the way.
Explain why it is preferable to take the geometric mean rather than the arithmetic mean when defining mean activity
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