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What are the frequency and energy of a photon with a wavelength of 900 nm. Report your answers to three significant digits.
The gas plus vapor at its equilibrium partial pressure leaves the liquid at the same temperature and pressure. If 6.550 g of acetone has evaporated, what is the vapor pressure of acetone at 25 degrees Celsius?
When heated, lithium reacts with nitrogen to form lithium nitride: 6Li(s) +N2(g) → 2Li3N(s)
Determine the partial pressure. Calculate the total pressure and volume in liters at STP of Nitrogen, Helium and Neon mixture.
The following reaction takes place in a sealed 40.0-L container at a temp of 120 degrees C 4NH 3(G) + 5 O2 (g) --> 4NO (g) + 6H2O (G)
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?
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0 C,the volume of the gas is 361 mL. To what temperature must the gas be heated to occupy a volume of 492 mL.
For a given sample of {rm CH_3OH}, the enthalpy change on reaction is 19.0 kJ. How many grams of hydrogen gas are produced?
If your electricity comes from a 33% efficient nuclear power plant, how many Pu-239 nuclei are produced as a result of your leaving the light on?
How do the strengths of London forces compare in CO2 and CS2? Which of these is expected to have a higher boiling point?
What is the the mole fraction of a solution prepared by dissolving 0.315 g of cholesterol
a system conducts 192 cal of heat to the surroundings while delivering 322 cal of work. what is the change in internal energy of the system (in cal)?
Caffeine, C8H10N4O2, is a stimulant found in tea and coffee. A sample of the substance was dissolved in 41.5 g of chloroform, CHCl3, to give a 0.0940 m solution.
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