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A solution is prepared by disolving 0.60 g of nicotine (a nonelectrolyte) in water to make 12 ml of solution. The osmotic pressure of the solution is 7.55 atm at 25 celcius. The molecular weight of nicotine is HOW MANY g/mol?
What is the pH at the equivalence point? (Kb of NH3 = 1.8 A 20.0 mL sample of 0.20 M sodium acetate is titrated with 0.11 M HCl(aq). What is the pH after the addition of 50.0 mL HCl(aq)?
an ideal gas with temperature independent Cp = (7/2)R at 15 degrees C and having initial volume 60 m^3 is heated at constant pressure (P =0.1013 MPa) to 30 degrees by transfer of heat from a resivoir at 50 degrees C.
How many Valence electrons does a balanced atom of Sodium have? What is the net charge on each ion?
Use Charles's law to calculate the volume the gas will occupy if the temperature is increased to 170.5^circ C while the pressure is held constant.
The Ksp of the imaginary compound AB is 1.6 * 10^-53. How many liters of water should it take to dissolve one molecule of this compound
What mass of NaOH and what volume of water are needed to make 400.g of 3.00% (by mass) solution
The rate constant of a chemical reaction increased from 0.100 s-1 to 2.70 s-1 upon raising the temperature from 25.0 degree C to 39.0 degree C.
Using words and pictures, explain why impurities usually lower the melting point of a substance. Next, imagine a case where an impurity actually RAISES the melting temperature of a pure substance
Consider the following half-reactions. What is the maximum Eo of a cell constructed using two of these half-equations.
Determine the volume of a 0.530 M KMnO4 solution required to completely react with 2.70 g of Zn.
if a 10. m3 volume of air acting as an ideal gas is at a pressure of 760 mm and a temperature of 27 degrees celsius is
For a solution of hexane (C6H14) and chloroform (CHCI3), would you expect it with respect to Raoult's law to be relatively ideal, to show a positive deviation, or to show a negative deviation
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