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What is the molar mass of toluene if 0.85 g of toleune depresses the freezing point of 100 g of benzene by 0.47 degrees C? Kf of benzene is 5.12 degrees C/m.
a solution is prepared by mixing 50.0 ml of 0.30 m pbno32 with 50.0 ml of 1.4 m kcl. calculate the concentrations of
What is the final temperature of the water and pieces of metal?
In an investigation of the electron absorption spectrum of a particular element, it is found that a photon having wavelength of 500 nm provides just enough energy to promote an electron from the second quantum level to the third. What is the energ..
Propose a mechanism to account for the formation of a cyclic acetal from 4-hydroxypentanal and one equivalent of methanol
Twenty dietary iron tablets with a total mass of 22.131 g were ground and mixed thoroughly. Then 2.998 g of the powder was dissolved in concentrated HNO3 and heated to convert all the iron to Fe3+
If 1.50 g of X reacts with 3.54 g of M to produce 4.22 g of a compound with the formula M4X3, and the atomic mass of M is 48.5 amu.
What is the equivalence point volume? What is the cell potential at each of the following volumes of added Ce4+ ?
Hypothesize as to the type of electrolyte the following solutions would be. Justify you answer from a chemical standpoint.
A sample containing 2.40 moles neon gas has a volume of 8.00 L. Assume that the pressure and the temperature remain constant.What is the new volume of gas in liters when a leak allows one-half of the neon atoms to escape?
A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 180g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7degrees Celsius
Calculate the energy of the frequency at which they are broadcasting. (In kilojoules)
What would be the molarity of a nonelectrolyte in an aqueous solution if it exhibited an osmotic pressure of 14060torr at 220C
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