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A 25.0-mL solution of 0.0670 M EDTA was added to a 34.0-mL sample containing an unknown concentration of V3 . All V3 present formed a complex, leaving excess EDTA in solution. This solution was back-titrated with a 0.0440 M Ga3 solution until all the EDTA reacted, requiring 12.0 mL of the Ga3 solution. What was the original concentration of the V3 solution?
There is 12.0 g CCl3F in a 1.1 L container at 856 torr and 300 K. What is the mass of the liquid left over?
The activation energy for the isomerization ol cyclopropane to propene is 274 kJ/mol. By what factor does the rate of this reaction increase as the temperature rises
4.41-g sample of a salt dissolves in 9.10 g of water to give a saturated solution at 25°C. What is the solubility (in g salt/100 g of H2O) of the salt.
If 200 g of water at 20 degrees celcius absorbs 41840 J of energy, what will its final temperature be
a 7.95 L Container holds a mixture of two gases at 37 degrees celcius. the partial pressure of gas A and gas B, respectively, are .287 atm and .698 atm. if .210 mol a third gas is added with no change in volume or temperature.
The most common source of copper (rm Cu) is the mineral chalcopyrite (rm CuFeS_2). How many kilograms of chalcopyrite must be mined to obtain 230. g of pure rm Cu?
What volume of 3.00M HCL in liters is needed to react completely (with nothing left over)
Propane burns in oxygen to produce carbon dioxide and water. c3h8 +5o2 yeilds 3co2 +4h2o Calculate the math of co2 that can be produced if reaction of 44g of propane and suficient oxygen has a 60% yeild.
Calculate the net charge of Aspartic Acid. Its given that Aspartic acid has a pK1 COOH at 1.99 and also a pK2 NH3 group at 9.90
Calculate how many calories of heat are needed to increases the temperature of 550 grams H2O from 12 degree celsius to 18 degree celsius?
An ethylene glycol solution contains 21.2 g of ethylene glycol in 85.4 ml of water. Compute the freezing point and boiling point of the solution. (Assume a density of 1.00 g/mL for water)
what would the magnitude of q need to be to give the experimental dipole moment? Express your answer as q divided by the proton charge. In other words, what fraction of a full proton charge is the charge magnitude of the ion pair?
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