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1. Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic.
A. Calculate the percent ionized in 0.0503 M phenol--a dilute solution.
B. Calculate the percent ionized in 9.22x10^-6 M phenol--a very dilute solution.
A solution is made by mixing 45.0 mL of ethanol, C2H6O, and 55.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C
Consider 2 moles of a onoatomic ideal gas (Cv,m=3R/2) at an initial pressure of 2.0 atm and an initial temperature of 298 K. Assume it expands adiabatically and reversibly until its volume doubles. calculate the expansion ork, the final tmperature..
If only COF2 is present initially at a concentration of 2.00 M , what concentration of COF2 remains at equilibrium? Express the molar expression numerically
The half-life of C-14 is 5730 years. A bone sample with 3.6 g of carbon has 32.6 disintegrations per minute. How old is the bone sample in years?
Calculate the number of moles of sodium bicarbonate orginally present in the unknown mixture, knowing that 20.0ml of 0.100M HCL were used in the step 2 of titration, using methyl orange as an indicator.
When 7 mL of a solution containing 2.5 M AlBr3 is diluted to 30 mL, a dilute solution is formed. What is the Br- concentration in 15 mL of the dilute solution?
When the stopcock between the manifold and the flask is opened, the pressure in the system is 287 torr. Assuming no temperature changes, what is the volume of the manifold
A 100ml sample of sodium bromide containde co104.62g of sodium bromide. upon evaporation, 6.280g of reside was obtained. frome this data calculate each of the folowing for the solution
The density of a 16.0 mass % solution of sulfuric acid in water is 1.1094{g/mL} at 25.0 degrees celcius.
A mole of hydrogen atoms contains 6.02 x 1023 atoms and occupies 22.4 L. How many hydrogen atoms are contained in 25.00 mL of this gas?
The density of a gaseous compound was found to be 1.23 g L-1 at 330 K and 25.5 kPa. What is the molar mass of the compound?
An 1.07 mol sample of carbon dioxide gas at a temperature of 8.00 oC is found to occupy a volume of 22.7 liters. The pressure of this gas sample is
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