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A gas is confined to a cylinder under constant atmospheric pressure. When 415 J of heat is added to the gas, it expands and does 106 J of work on the surroundings. What is the value of Delta H for this process? What is the value of Delta E for this process?
Dinitrogen monoxide is still used as a general anesthetic. The Henry's law constant for the solubility of N2O in water is 2.5 x 10^ -2 mol/L x atm. What is the molar solubility of N20 in water if the partial pressure of N2O is 1500 mm Hg
Calculate the osmotic pressure of the mannitol solution of part( b ) when it is measured against pure water, and compare it withthe osmotic pressure of the ideal solution.
What is the barometric pressure exerted in pascals of a column of CHCl2Br (density = 2.451 g/cm3) 501.6 mm in height
The angular momentum quantum number (?), the magnetic quantum number (m?), and the spin quantum number (ms) have strict rules which govern the possible values. Identify allowable combinations of quantum numbers for an electron
Assign an oxidation state to each atom in each polyatomic ion. Express answers as a signed integer. 1. CrO4^2- 2. Cr2O7^2- 3. PO4^3- 4. MnO4^-
differentiate acids from compounds that contains hydrogen and an anion, or oxyanions and are not acids
A 81 L sample of dry air cools from 145C to -22C while the pressure is maintained at 2.85 atm. What is the final volume?
calculate ground state energy, 1st excited energy level, and wavelenght of an electronic transition between the 2 lowest energy states for an electron
A 1.50L sample of neon gas at 1.10 atm and 25 degrees celsius is heated to 45 degrees celsius. The neon gas is then subjected to a pressure of 1.50 atm. Determine the new volume of the neon gas.
Describe how you would make 1 L of buffer with a pH of 5.00 using only pure materials and deionized water so that the total concentration of the conjugate acid/base pair is 0.200 M. Give the amounts of the pure materials in grams if they are solid..
A sample of a gas occupies a volume of 323 mL at 625 torr. At constant temperature, what will be the new volume when the pressure changes to the following:
The next 6 questions involve the calculation of concentrations of the molecular and ionic species in an aqueous solution that has an analytical composition of 0.060 M KH2PO4 + 0.460 M K2HPO4.
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