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Assume two 200.0-L tanks are to be filled separately with gases helium and hydrogen. Find mass of each gas is required to produce pressure of 135 atm in its respective tank at 24 degrees celcius?
Calculate the energy per mL if the energy per gram for Methanol (MW = 32g) is 0.83 kcal/gram and for Ethane MW
Atoms and molecules consist of electrons and nuclei. When no bonds exist between atoms, electrons are on discrete energy levels called orbitals: those levels where electrons reside at zero degree Kelvin are called ground states
A standard l00-ppm quinine solution registered 125 when measured under conditions identical to those for the diluted sample. Calculate the mass in milligrams of quinine in the tablet.
LDA is added to a solution containing methyl pentanoate. After this reaction has gone to completion, 2-butanone is added. Once this reaction is completed an acid workup is performed.
What characteristic properties distinguish the transition elements from the Group IA and -IIA metals?
A lake has a pH of 8 and the total molar concentration of nitrogen species (NH3 and NH4+) is 7.1×10-4 mol/L. what is the percentage of aqueous NH3 in the lake
A 50 mL sample of 0.06M HC3H5O2 (propanoic acid) is titrated with 20 mL of 0.07M NaOH. What is the pH at this point of the titration? (Ka of HC3H5O2 = 1.3*10^-5)
Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings.
Assume the Pacific Ocean has a surface area of 1.7 x 108 km2 and an average depth of 3900 m. Calculate the volume of water in the ocean in liters
Part A What is the reaction that corresponds to the first ionization energy of rubidium, Rb ? Part B What is the reaction that corresponds to the electron affinity of iodine, I
The kinetic energy of the ejected electron is given by 1/2 mv2= h v -?. where m and v are the mass and velocity of the electron
What is the change in total pressure within the chamber following the reaction? Assume a constant temperature throughout the process.
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