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Find the appropriate ionization energis the handbook of chemistry and physics and calculate the U elec for Na. ignore the bond energy and compute U elec for NaH (g).
a freshman is currently enjoying the arts studio program she is pursuing at a well-known university. in her free time
Choose the correct equation for the standard enthalpy of formation of CO(g), where change Hf for CO= -110.5kJ/mol? (gr indicates graphite)
Determine the equilibrium constant for the system 2A 3B. At equilibrium, the concentrations are shown here: [A] = 9.43 x 10-2 M, [B] = 1.41 x
calculate the number of days required to forget 95% of the material learned by each method. Assume a constant temperature and no further reference to the learned material during the decay time.
a buffer is created by mixing equal concentrations of nh4 and nh3. calculate the volume of both solutions needed to
Use this mass and the dilution volumes to calculate the ACTUAL molarity of the sulfuric acid in the INITIAL solution.
Calculate the molar solubility of MnS in a 0.32 M NH4Cl- 0.50 M NH3 buffer solution that is saturated with H2S ([H2S]=0.10 M). Kspa for MnS is 3*10^10.
a termolecular reaction is carried out involving only two reactants, A and B, where two molecules of A are involved for each molecule of B. When the concentration of A is 0.415 M
Na3AlF6(l) 3 Na(l) + Al(l) + 3 F2(g) What is the concentration of F2 over a bath of molten cryolite at this temperature? a) 3 10-35 M b) 5 10102 M c) 6 10-74 M d) 8 10-312 M e) 8 1017 M
You intend to monitor the diffusion using a camera that is capable of one image every 60 s. Is this imaging rate of the camera sufficent to detect the diffusion of a single lysozyne protein over a length of 1μm
Use balanced equations to determine whether either Fe(OH)2 or CuS has a different solubility with a change in pH:CuS changes solubility with changing pH. Fe(OH)2 does not change solubility.
How much entropy does this produce per hour in the surroundings at 25.4 °C? Assume the heat transfer is reversible.
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