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The pKa of phenol is 9.89. What is the Ka of phenol?
a. 1.3 x 10-24b. 1.3 x 10-10c. 7.8 x 10-5d. 7.8 x 109
a 720-mL sample of water was cooled from 60 degrees celsius to 10 degrees celsius. How much heat was lost?
why is significant serum (in the blood stream) chlorestrol reduction so difficult, and why do most of the drugs designed to reduce
if 8.6L of H2 reacted with 4.3L of O2 at STP, what is the volume of the gaseous water collected (assuming that none of it condenses)?2H2(g)+ O2(g)--> 2H2O(g
How many grams of oxygen are collected in a reaction where 222 mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr?
If a reaction mixture initially contains 486 of and 261 of , what is the mole fraction of when equilibrium is reached.
How much heat is released when 50.0 grams of water at 100 degree celcius hits the skin and cools to a body temperature of 37 degree celcius.
A 4.78g sample of aluminum completely reacts with oxygen to form 6.67g of aluminum oxide. What is the mass percent composition of aluminum in aluminum oxide?
For the following amino acids, indicate how they might interact to contribute to the tertiary or quaternary structure of a protein. choose from among the following: disulfide bond, salt bridge
provide the structures for the two products indicate two features of the spectrum (ie hydrogen ratio, peaks, classification of peak (singlet doublet etc) that would justify assigning the structure.
In extracting an organic compound from an aqueous solutin, what is the practical advantage to having the organic solvent be more dense
Ferrocene cannot be nitrated using the conventional HNO3-H2SO4 mixed acid conditions
What is the pressure in millimeters of mercury of 0.0110 mol of helium gas with a volume of 208 mL at a temperature of 35 degrees C?
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