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Explain why can a steam distillation be carried out rapidly, while a simple or fractional distillation should be carried out slowly?
Calculate the final temperature when a 22.0 gram sample of ice at 0oC is placed into a styrofoam cup containing 113 grams of water at 77.1 oC. Assume that there is no loss or gain of heat from the surroundings.
The pK value for the active site residue Glu35 is 6.3. what is the ratio of ionized to protonated Glu35 residues at pH 7
When conducting recrystallization, the recrecrystallizing solvent must have certain characteristics (in terms of how its acts on the target sample and the contaminants)
what would happen to the solubility of potassium chloride in water as the water temperature increased from 25 degrees
With this reaction 4FeS2+11O---> 2FeO3 +8SO2 A) how many molecules of SO2 are contained in 0.526 of this component? B) if 1.42 g of FeS2 reacts , how many SO2 grams are formed
Draw those that have a trisubstituted ring where the methyl groups are oriented meta.
Determine the kinds of intermolecular forces that are present in each element or compound.
What is the ratio of C-14 in a wooden object made in 100 BC to the one made of the same kind of wood in 700 BC? Half life of carbon-14 is 5730 years.
The heat of formation of KCl(s) is -436.7 kJ/mol and the heat of formation of KCl(aq, 1 m) is -419.5 kJ/mol. Determine the heat of solution of KCl.
Which of the following combinations of reactants would lead to the occurrence of an oxidation-reduction reaction. (a) Ag (s) + HCl (aq) (b) Zn (s) + NiCl2 (aq) (c) Ca(NO3)2 (aq) + ZnCl2 (aq) (d) Ag (s) + Au (s) (e) Cu (s) + ZnCl2 (aq)
if the reaction between iron iii ion and thiocyanate ion yielded an equilibrium concentration of .15m for each of these
a large plane wall has a thicness 2 m thermak conductivity 1.2 wm.c and surface area 15 m. the to side of the wall are
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