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To prepare 1.00 L of a solution with a final [NH4Cl] of 1.88 M and a pH of 9.43, how many NH4Cl moles and how many NaOH moles would you need? About how many more moles of NaOH could you add before the buffer breaks down?
The vapor pressure of a mixture of 400 g of carbon tetrachloride and 43.3 g of an unknown compound is 137 torr at 30 °C. The vapor pressure of pure carbon tetrachloride at 30 ºC is 143 torr
The compound malonate is an analog of succinate and is a strong inhibitor of succinate dehydrogenase. The active site of the enzyme will bind to either molecule, however malonate will not undergo any reaction and gets stuck on the enzyme.
A 4.5 g sample of LiCl at 25 degrees Celsius dissolves in 25 mL of water also at 25 degrees Celcius. The final equilibrium temperature of the resulting solution is 60.8 degrees celsius. What is the enthalpy of solution delta H subscript 8 of LiCl ..
Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
How much heat energy, in kilojoules, is required to convert 61.0 g of ice at -18.0 C to water at 25.0 C ?
bathed by an atmosphere of nitrogen at 77K and 1 bar? Assume every nitrogen molecule that strikes the surface sticks and that a nitrogen molecule covers an area of 1.1e^5 pm^2.
How many milliliters of 0.105 M HCl are needed to titrate each of the following solutions to the equivalence point:-- 45.0 mL of 0.0950 M NaOH
Assume that only a single stream exits the fuel cell. What is the flow rate of each of the species leaving the fuel cell? Not that the flow rates given to correspond a fuel cell rate at approximately 50kW using 2004 technology.
is independent of pressure. By doing so, obtain an expression for V as a function of T and ? at fixed P.
used to fill a weather balloon in order to lift equipment into the stratosphere. To what maximum pressure (in atm) could a 271 L balloon be filled?
Vitamin b6 is needed in the metabolism of amino acids. When it binds to an enzyme it forms a complex with the e-amino group of lysine, which is a primary amine.
An aqueous solution that contains 285ppm of potassium nitrate (KNO3) is being used to feed plants in a garden. What volume of this solution is needed.
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