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1. For which energetic degrees of freedom are the energy-level spacings small relative to kT at room temperature?
2. What is the high-T approximation for rotations and vibrations? For which of these two degrees of freedom do you expect this approximation to be genrally valid at room temperature?
Chemical reaction calculations, 1. Unbalanced equation SOCL2(1) + H2O(1) --- SO2(g) + HCl(g). How many molecules of H2O can 35.0 grams of thionyl chloride remove?
at 986°C is 0.63. A rigid cylinder at that temperature contains 1.2 atm of carbon monoxide, 0.20 atm of water vapor, 0.30 atm of carbon dioxide, and 0.27 atm of hydrogen. Is the system at equilibrium?
calculate mass of KHC8H4O4 (molar mass = 204.44 g/mol) that reacts with 15 ml of the NaOH solution
The atmospheric sulfur dioxide concentration over a certain region is 0.12 ppm by volume. Calculate the PH of the rainwater due to this pollutant. Assume the dissolution of SO2 does not affect its pressure.
with 8 g of methane and 10g ammonia how much hydrogen cyanide will be formed?
Calculate the average speed of an oxygen gas molecule, O2, at 21.0 degrees Celsius. Express your answer numerically in meters per second.
Why are fluorescence measurements made at 90 degrees from the incident beam in most cases? 3. What is the ideal cuvette placement to avoid pre- and post-filter effects?
A reaction mixture initially contains a Br2 partial pressure of 755 torr and a Cl2 partial pressure of 725 torr at 150 K. Calculate the equilibrium partial pressure of BrCl.
A cylinder fitted with a piston contains 3.00 moles of He gas (ideal!) at P = 1 bar and is held in a large constant-temperature bath at 400 K. The pressure is reversibly increased to 5.00 bar.
A hydrogen-filled balloon was ignited and 1.50 gram of hydrogen reacted with 12.0 g of oxygen. How many grams of water vapor were formed?
in a laboratory, 6.82 g of Sr(NO3)2 is dissolved in enough water to form 0.500 L of solution. A0.100-L sample is 0.0245 M solution of Na2CrO4.
Electrolysis of molten MgCl2 is the final production step in the isolation of magnesium from seawater by the Dow process.
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