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A 50.0 L cylinder contains nitrogen gas at a pressure of 21.5 atm. The contents of the cylinder are emptied into an evacuated tank of unknown volume. If the final pressure in the tank is 1.55 atm, then what is the volume of the tank?
Demonstrate how an addition reaction of H3O+ to an alkene is the reverse of a catalyzed E1 reaction of an alcohol.
Calculate the entropy change for vaporization of 18 g of H2O. The molar enthalpy of vaporization for water is 44 kJ/mol and the boiling point
Calculate rate constant for 1. level reaction where 81% of the matters have already react after 27 seconds.
One way to make a set of solutions of regularly decreasing concentrations is to make serial dilutions of the most concentrated one. a. starting with
A gas sample has an original volume of 800 ml when collected at 710 mm and 30°C. What will be the volume of the gas sample if the pressure increases to 780 mm and the temperature increases to 35°C?
What % of the bromide ions remain in solution, i.e., unprecipitated, just before silver chloride begins to precipitate? Ksp for AgCl=1.8x10^-10, Ksp for AgBr=3.3x10^-13
A stock solution is prepared by adding 25 mL of 2.2 M AlCl3 to enough water to make 75 mL. What is the Cl- concentration of 25 mL of the stock solution.
In each of the following pairs of hydrocarbons, which one would you expect to have higher boiling points? And Why?
At 25 C, the standard hydrogen electrode (SHE) has a half-cell potential that is defined to be 0.00 volts. If the pH is increased at this electrode (keeping everything else the same), at what pH will the half-cell potential be equal to -0.337 volt..
a) If the initial sample is 8.50 g, what mass of the original iridium-192 remains after 130 days? b) Estimate the half-life of the radioisotope. c) How many days would it take for one-fourth of the sample to decay?
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32 P, how many grams will remain after 112 days?
Decide whether or not the metal K dissolves in 1 M HCl. For this metal, if it does dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
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