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Imagine that a beaker of pure water and another beaker containing water and some NaCl are both boiling under 1 atm pressure. Which of the following statements do you think is correct for this case? Please explain.
a) both liquids are at the same temperature, and they have the same vapor pressures,
b) the liquids will be at different temperatures and vapor pressures,
c) the liquids will be at the same temperature, but the vapor pressures will differ,
d) the liquids will be at different temperatures, but the vapor pressures will be the same.
A 0.3500 g sample of brass is analyzed by the procedure in the above exercise. The Beer's Law constant for the copper ammonia complex is determined to be 7.50 x 10^-1 mL/mg.
A cobalt compound has an observed magnetic moment of 5.2 B.M. What can you deduce about the compound?
Calculate the mass of silver chloride required to plate 135 mg of pure silver. Silver chloride, often used in silver plating, contains 75.27% Ag.
If a buffer solution is 0.260M in a weak base (Kb=5.6x10^-5) and 0.550M in its conjugate acid, what is the pH.
How many molecules of substance B are produced when 30.0 g of substance A reacts? The molar mass of substance A is 23.5 g/mol. A) Convert the mass of A to moles
Draw a sketch, roughly to scale, of the potential energy diagram for a system in which Ea= +80kJ and ?H= -20kJ. Label the axes, reactants
Consider the titration of 50.0 mL of 0.217 M hydrazoic acid (HN3) (Ka = 2.6 x 10-5) with 0.183 M NaOH. determine the pH of the solution before any NaOH is added ?
If during the course of the reaction, the vessel is found to contain 7.00 mol of C, 14.1 mol of H2O, 3.00 mol of CO, and 8.60 mol of H2, what is the reaction quotient Q?
Bombardment of boron-10 with a neutron produces a hydrogen-1 atom and another nuclide. What is this nuclide
Evaluate the average kinetic and potential energies, and , for the ground state (n=0) of the harmonic oscillator by carrying out the appropriate integration.
solution of potassium sulfate. Assuming that all ionic species are completely dissociated, what is the osmotic pressure of the mixture in torr?
electrons as dots and showing all non bonding electrons for C2Cl4 tetrachloroethylene and CO2 carbon dioxide
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