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The standard entropy of Pb(s) at 298.15k is 64.80 jk-1 mol-1. assume that the heat capacity of Pb(s) is given by Cp,m (Pb,l)/jk-1mol-1 = 32.51 -.00301 t/k. calculate the standard entropy of Pb (l) at 650 C. calculate delta H for the transformation Pb(s,25)---Pb (650 C)?.
calculate the masses of the solid you must measure out to prepare 100ml each of 0.025 m kno3 0.025 m cuso4 0.025 m
Conjugation of the functional group in alkyl socyanates has little impact on the antisymmetric -N=O stretching vibration located near 2770/cm . Explain.
a cube of osmium metal 1.500 cm on a side has a mass of 76.31 g at 25degc. what is the density in gcm3 at this
evaporate more quickly: 55 mL of water in a beaker or 55 mLmof acetone in an identical beaker under identical conditions?
What is the change of molar Gibbs energy for the freezing of water at -10C? The vapor pressure of H2O (liquid, -10C) is 286.5Pa. The vapor pressure of H2O (solid, -10C) is 260Pa. At -10C the molar volume of supercooled water
A balloonn containing a sample of Helium gas is warmed in an oven at constanst pressure. If the balloon measure 1.25 l at room temperature (20c), what is it volume at 98 c
A 16.4-L sample of gas at STP is heated to 55°C at 605 torr. What is the new volume?
an aqueous cacl2 solution has a vapor pressure of 81.6 mmhg at 50 c. the vapor pressure of pure water at this
write a brief essay describe the benefits of using fusion reactions for nuclear energy instead of fission. also discuss
Instead of 6 M NaOH being added to the test solution, 6 M HCl is added. How will this affect the test for the presence of ammonium ion in the solution? Explain.
what is the molar concentration of a h3po3 solution if 150.00 ml of the solution was required to neutralize 75.00 ml of
A copper cathode with an initial mass of 10.77 g is placed in a solution of CuSO4. After current has passed through the electrode for 15.0 minutes the cathode has a mass of 12.89 grams. Determine the amount charge (in Coulombs) that has passed thr..
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