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Ziram and fuberidazole are 2 weak bases, estimate what pH the water would need to be to drop their vapor pressure to 50% that of a solution of a free base
an optically pure compound was diluted to 200.0 mL with water and placed in a polarimeter tube 10.0 cm long. The measured rotation was -2.53° at 25 °C. Calculate the specific rotation of the compound.
non-thermal plasma
A sample of ideal gas at room temperature occupies a volume of 34.0L at a pressure of 722 torr. If the pressure changes to 3610 torr, with no change in the temperature or moles of gas, what is the new volume, V2
In water open to the atmosphere (CO2 = 390 ppmv), at what pH must the water be buffered so that the carbonate concentration is twice the bicarbonate concentration?
what is the degree of purification (fold purification). what is the percent yield of the enzyme recovered in the purified fraction
How many possible isomers are there of an octahedral complex having the formula M(ABC)(NH3)(H2O)Br where ABC is the tridentate ligand H2N-C2H4-PH-C2H4-AsH2
determine the energy change that occurs during the combustion of 1 mole of ethene (ethene's connectivity is: H2C=CH2 also written as CH2=CH2).
We have 500 mL of a solution with Ba^(2+)=0.10M. How many grams of LiF must be added to begin precipitation of BaF2? The Ksp of BaF2 is 1.7 x 10^(-6)
Calculate the pH of the above solution if 1.00 moles of benzoic acid and .97 moles of Sodium Benzoate are added in enough water to make 750ml of solution
Potassium fluoride is extremely soluble in glacial acetic acid as well as the solutions have a number of unusual properties. In an attempt to understand them, freezing point depression were obtained by taking a solution of known molality and then ..
What is the osmotic pressure developed at 17 oC by an aqueous solution that is 0.111 M in AlCl3
Calcutate the number of grams of drug to be wieghted for this solution
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