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The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25oC. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is testosterone .
Calculate the vapor pressure of the solution at 25oC when 12.43 grams of testosterone, C19H28O2 (288.4 g/mol), are dissolved in 246.7 grams of diethyl ether.
The mass of a cube of iron is 439 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
Calculate the enthalpy change that occurs when 1.00 kg of acetone condenses at its boiling point (329.4 K). The standard enthalpy of vaporization of acetone is 29.1 kJ · mol -1 .
Describe an example of the how the structure of DNA or the transfer of genetic information impacted someone's life.
The partial pressure of O2 in the exhaust is 75.19 mmHg and the partial pressure of CO2 in the exhaust is 47.94 mmHg. What is the mole fraction of propane in the fuel stream? (mol C3H8 / mol)
The rate constant of a reaction is 4.7 10-3 s-1 at 17°C and the activation energy is 33.6 kJ/mol. What is the value of k at 75°C.
The density of germanium is 5.325 g/cm3. If you made a 5.3-nm diameter quantum dot of germanium, how many Ge atoms would it contain? Assume the dot is spherical.
10 M solution of chloroacetic acid, ClCH2CO2H, has a pH of 1.95. calculate Ka for the acid.
Calculate the heat of enthalpy for the reaction: PCl5(g) → PCl3(g) + Cl2(g)
Predict the anode, cathode, and overall cell reactions when an aqueous solution of each of the following salts is electrolyzed in a cell having
How many L. of N2 gas are produced at STP when the airbag inflates if the airbag contains 132 g. of Sodium Nitride?
Why do we have to turn the solution very acidic first before we convert the ions into sulfides? Why don't we just make the sulfides first with the unknown?
Consider the reaction with the rate law, Rate = k[BrO3-][Br-][H+]2 By what factor does the rate change if the concentration of Br- is doubled? Just put in the number as a whole number or fraction.
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