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The rate constants of a reversible procedure at equilibrium were measured to be 100 M/s for the forward direction as well as 2.3 M/s for the reverse direction. Explain what is the equilibrium constant for the reaction at this temperature?
a .242 g sample of naphthalene is burned in a bomb calorimeter containing 1025 g of water. the heat of combustion of
A certain atom is bombarded with a neutron and changes into Lithium 7. What was that atom? (It is a fission reaction)
A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake. Eventually it rusts and the gas bubbles to the surface. A chemist collects a sample of the gas with the idea of trying to identify the gas.
calculate the micrograms (to the nearest microgram) of iodine per serving in the finished product. Show your work.
Calculate the theoretical yield in grams of methyl piperate from 3.6g of C9H17O5P and using 5% of molar excess of piperonal.
Write the reaction between ferric chloride and lime slurry that results in precipitation of Fe(OH)3. For a dosage of 40 mg/l FeCl3: What is the required stoichiometric addition of lime expressed as CaO?
What is the change in internal energy (in J) of a system that absorbs 0.535 kJ of heat from its surroundings and has 0.362 kcal of work done on it
What is the volume in mL of 0.762 M HCl(aq) needed to reach halfway to the equivalence (stoichiometric) point in the titration of 41.9 mL of 0.457 M N2H4(aq) (Kb = 1.7 x 10-6).
From the values of ?H and ?S, predict which of the following reactions would be spontaneous at 25 degrees celsius. Reaction A: ?H = 10.5 kj/mol, ?S = 30.0 J/K*mol Reaction B: ?H = 1.8 kj/mol, ?S = -113 J/K*mol
One kilogram of steam in a piston/ cylinder device undergoes the following changes of state. calculate Q and W for each step
The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity.
How much heat is needed to raise the temp. of 25.0 g of gold from 23C to it's melting point at 1063C? I know the answer is 3.4 KJ but need to know how to get the answer if unknown.
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