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Explain what is the physical origin of quantized energy states for a particle confined to move in a one-dimensional box?
A gas sample containing 1.47 mol at 25°C exerts a pressure of 401 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr,
Use the following reaction to find out how many grams of H2O you need to react with 5.67*10^-2 moles of Li2O Li2O + H2O ---------> 2LiOH
freezing point 0.00°C boiling point 100.00°C Kf 1.86°C/m Kb 0.512°C/m What is the freezing point of a solution of glucose, a nonelectrolyte, that contains 91.0 g of C6H12O6 dissolved in 323 g of water? Use molar masses with at least as many signif..
Determine the chemical formulas for a covalent compound whose molecules contain 2 carbon atoms, 6 hydrogen atoms and an oxygen atom
A 27.0 L sample of nitrogen at 7.85 atm and 27 deg Celsius is simultaneously expanded to 63.4 L and heated to 35 deg Celsius. What is the new pressure of the gas
determine the minimum length of a surface crack that will lead to fracture. Assume a value of 0.96 for Y.
The temperature rises from 19.25C to 22.17C. If the heat capacityof the calorimeter is 98.6J/C, calculate the enthalpy change forthe above reaction on a molar basis
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 8.10 nm in diameter?
calculate the concentration of so2ppm that must be reached in polluted air in ppm if the dissolved gas is to produce a
Calculate the number of milligrams of iron in a vitamin tablet when there are 3.9 moles of solute (ferrous fumarate solution)
A 32.65-g sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 54.00 mL
Calculate the radius of an iridium atom, given that Ir has an FCC crystal structure, a density of 22.4 g/cm3, and an atomic weight
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