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Calculate the vapor pressure of a solution containing 29.4 g of glycerin (C3H8O3) in 120 mL of water at 30.0 C. The vapor pressure of pure water at this temperature is 31.8 torr. Assume that glycerin is not volatile and dissolves molecularly (i.e., it is not ionic) and use a density of 1.00 g/mL for the water.
An electrochemical cell has an Eocell of 2.00 V and transfers 1 mole of electrons. The Faraday constant is 96,485 C/mol e-. What is the value of delta G
Draw and discuss the mechanism of the Diels-Alder reaction (with arrows to show the electron movements). Draw the orientation of the reacting p-orbitals and indicate how they overlap to form product.
What is the percent by mass of NaHCO3 in a solution containing 10 g of NaHCO3 dissolved in 300 mL of H2O
Element X has two natural isotopes: X-6 (6.015 amu) and X-7 (7.016 amu). Calculate the atomic mass of the element X given the abundance of X-7 is 92.5%
determine the emf of a fuel cell that oxidizes hydrogen according to the reaction2h2 g o2 g --gt 2h2o lunder the
to find the by mass of a compound in a given sample.dissolving 3.00 g of an impure sample of calcium carbonate in
What is the molarity of a solution made by dissolving 5.69 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.)
Using standard reduction potentials, calculate the equilibrium constants for the following reactions.
sodium 24 has a half life of 15 hours. how much sodium 24 will remain from a 10.0-g sample after 60 hours?
Pb atom is ionized using a photon of ultraviolet radiation having an energy of 1.86E-18 J, what is the amount of leftover energy that goes into the kinetic energy of the ejected electron
Which solution behaves more ideally, a 5.0% by weight NaOH (aq) solution (b.p. = 102 ºC) or a 50. % NaOH (aq) solution (b.p. = 140. ºC) Support your answer with calculations (hint: what are the theoretical boiling points for these solutions).
A 247-ln fullback runs the 40-yd dash at a speed of 19.99 +/- 0.10 mi/h and has a wavelength of 7.79E-37. What is the uncertainty in his position based on the de Broglie wavelength
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