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A gas is expanded from an initial volume of 20.5L at 0.92 atm. At 23ºC to a final volume of 34.6L. During the expansion the gas cools to 12.0ºC. What is the final pressure? Please show all work
A titration of 60.0ml of 0.30M pyridine, C5H5N, required 90.0ml of 0.20M HCL to reach the equivalence point. What is the pH at this equivalence point. Kb(C5H5N)= 2.0e-9.
An overly efficient student simultaneously prepared two titration mixtures, consisting of diluted bleaching solution, KI solution, and HCI solution.
A 34.62 mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What is the concentration of the original sulfuric acid solution?
What is their role in this reaction? In the case of this particular example that you watched, where would each of these ions have come from?
suppose that a cars starter draws 225A of current for 6.3 s to start the car. what mass of Pb is oxidized in the lead-acid battery to supply the electricity?(in grams)
express the work of isothermal reversible expansion of a van der waals gas in reduced variables and find a definition
How much heat is required to vaporize 351 g of liquid ethanol at its boiling point.
At pH of 10.0, explain what is the predominant structure of arginine. Depict out the amino acid and indicate the net charge that the amino acid has at the given pH.
using a solution contains the ions pb2 ag and ni2. dilute solutions of sodium chloridenacl sodium sulfatena2so4 and
Describe how you would prepare each of the following aqueous solutions. - 230 g of a solution that is 0.60 molal in Na2CO3 starting with the solid solute. - 1.30 L of a solution that is 18.0% Pb(NO3)2 by mass. (density = 1.16 g/mL)
Hydrogen is an unusual element because it behaves in some ways like the alkali metal elements and in other ways like nonmetals. Its properties can be explained in part by its electron configuration and by the values for its ionization energy and e..
If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
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