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An aqueous solution contains the amino acid glycine (NH2CH2COOH). Assuming that the acid does not ionize in water, calculate the molality of the solution if it freezes at -0.8 degrees C.
Since the freezing point of a solution depends on the number of particles, what would you expect the freezing point of 0.1 m solutions of aqueous NaCL and BaCl2?
What is the molarity of a hydrochloric acid solution if 40.0 mL of HCl is required to neutralize 2.43g of calcium carbonate (MM = 100.09 g/mol). 2 HCl(aq) + CaCO3(aq) --> CaCl2(aq) + H2O(l) + CO2(g)
helium has a density of 1.79 x 10-4 gml at standard temperature and pressure. a balloon has a volume of 6.3 liters.
The J=3---J=2 pure rotational transtion for the CS molecule occur at 146.831 GHZ. Calculate the bond length(in pm) for the CS molecule, assuming that there is negligible centrifugal distortion.
Consider the water wave shown here. How could you measure the speed of this wave? How would you determine the wavelength of the wave?
What is the binding energy per nucleon, in joules, of a chlorine-35 atom, given that the atomic mass equals 34.9595 amu. (e- mass = 0.00055 amu, n mass = 1.00867 amu, p mass = 1.00728 amu, c = 3.00 x 10^8 m/s, 1 amu = 1.6606 x 10^-24 g, 1 J = 1 kG ..
At 80C the vapor pressures of pure liquids X, Y, and Z are 385, 190, and 66 mmHg respectively. what pressure must be exerted on the surface of a solution containing one mole of X, three moles of Y, and two moles of Z for boiling to begin at 80C
a gas cylinder containing 6.38 mol of neon has pressure of 491mmhg at 295k. if 3.22mol helieum is added at constant
Various metals pack in cubic unit cells. The density of a metal and length of the unit cell can be used to find out the type for packing. For instance sodium has a density of 0.968 g/cm3 and a unit cell side length a of 4.29 Å. (1 Å = 1. 10-8 cm.)
A gas mixture composed of helium and argon has a density of 0.605g/L at a 741mmHg and 298K .What is the composition of the mixture by volume?
Consider the reaction 2ZnS + 3O2 → 2ZnO + 2SO2. Suppose that you wanted enough O2 to completely react with 500. g of ZnS. What mass of O2 should be present?
A second 1.0 mL sample is spiked with 2.0 microliters of a 1000 ppb Pb2+ standard and diluted to 5.0 mL, yielding an Sspike of 0.4. Determine the concentration of Pb2+ in the original sample of blood.
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