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Explain if you dissolve .95 grams of an unknown salt into 13 grams of Benzene (C6H6) as well as find that the new freezing point is 2.78°C, define what is the Molar Mass of the unknown? Compute what the new boiling point would be. Define what would the mole fraction of Benzene be?
A hypothetical metal has a face-centered cubic unit cell and a density of 6.12 g/cm3. The molar mass of the metal is 143.2 g/mol. What is the atomic radius of this metal?
Briefly explain how a lake with a limestone bed is more resistant to pH changes than a lake with a granite bed
The hydrogen atom now has a single electron in the 3d subshell. Calculate the energy (in kJ/mol) required to ionize this (excited state) hydrogen atom. This is the energy required to remove the electron completely from the atom
Determine the [H+], [OH], and the pH of a solution made by dissolving 1.03 g of NaOH, a strong base, in water to make exactly 1.50 liters of solution
Zinc phosphate (Zn3(PO4)2) has a solubility product constant Ksp = 9.0 x 10-33. What is the solubility of zinc phosphate in...pure water
Find the total number of atoms in a sample of cocaine hydrochloride, C17H22ClNO4 of mass 20.0 mg.
Will a precipitate form when a solution of sodium acetate and a solution of ammonium sulfate mix and what is the net ionic equation that describes the chemical change. what about for a solution of calcium chloride and a solution of mercury (I) nit..
suppose the barium sulfate weighed in the crudible above was not completely dry. how would this affect the
Determine How many grams of NaOCl are in the solution if the percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%.?
Dinitrogen monoxide is still used as a general anesthetic. The Henry's law constant for the solubility of N2O in water is 2.5 x 10^ -2 mol/L x atm. What is the molar solubility of N20 in water if the partial pressure of N2O is 1500 mm Hg
If 0.52 moles of terephthalic acid are reacted with 0.50 moles of ethylene glycol, what is the number average degree of polymerization at 90 and 100% reaction
If 55.4 mL of BaCl2 solution is needed to precipitate all the sulfate ion in a 740 mg sample of Na2SO4, what is the molarity of the solution?
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