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What effect would the incomplete drying of a sample (for example, the incomplete removal of a recrystallization solvent) have on the melting point?
Phenolphthalein,Ka= 7.0*10^-10 , is colorless in its protonated form (HX) and fuchsia in its ionized form (X-). At what pH will phenolphthalein be a perfect pink color
10.00 mL of a solution containing 0.17 M NaCl and 0.23 M AlCl3 is introduced into a fully charged cation exchange column. How many moles of hydronium ions will be released by the column?
Why is it important to rigorously exclude moisture when performing a Grignard reaction
A 65 kg man is on ice skates. The skates blades have a total contact area of 2.0 cm^2. How much pressure does the man exert on the ice
What is the pH of .3M HCl after 10mL of .3M NaOH is consecutively added until 120mL. Where is the Equivelance point
The reactants A and B are mixed, and the reaction is timed until a color change occurs. The data is as follows-
write the name and the structural formula of the organic product that would result from the reaction below. dont forget
A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are present in a typical adult
The n=8 to n=2 transition in Bohr hydrogen atom occurs in the region of the electromagnetic spectrum. A radio B ultraviolet C X-ray D infrared E microwave
Determine How many moles each of Na+ and Cl- are in 0.800 L A physiological saline solution contains 172mEq/ L each of Na+ and Cl-of the saline solution?
How much energy is required to vaporize 145g of butane at its boiling point? The heat of vaporization for butane is 23.1 kJ/mol
describe the hybrid orbitals uses by the central atom and the types of bonds formed in
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