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A 0.150- M solution of chloroacetic acid (HC2H2ClO2) has a pH of 1.86. What is the value of Ka for this acid and the percent ionization?
The osmotic pressure of a aqueous solution of a given polymer with mass concentration 0.300 g/mL is 10.0 torr at 298 K. Estimate the molar mass of the polymer.
Explain why it takes longer time when anyone cook an egg in boiling water while camping at in elevation of 0.5km in the mountain than it does it home.
Draw those that have a trisubstituted ring where the methyl groups are oriented meta.
A gas sample was collected over water at 25.3 0C. The total pressure is determined to be 0.97 atm. What is the partial pressure of the gas that was collected?
What is the activation energy for a reaction whose rate is tripled by a temperature increase from 22.5°C to 58.0°C?
how many grams of silver nitrate are present when 8.50 g of silver are in a sample?
sotonic saline solution, which has the same osomotic pressure as blood, can be prepared by dissolving 0.923 g of NaCl in enough water to produce 100.mL of solution. What is the osmotic pressure of this solution at 25 ?C?
What mass of HCl gas must be added to 1.00 L of a buffer solution that contains [acetic acid] = 2.0 M and [acetate] = 1.0 M in order to produce a solution
Imagine that you model your lungs as a 5 L sealed balloon at sea level: Estimate the volume of your lungs at 100 m below the sea level.
Which of the following is a buffer?
2.00 x10^2 mL of .744 M HCl is mixed with 2.00 x 10^2 mL of .372 M Ba(OH)2. how many moles of water are produced in the reaction
if 1.500 g of solute that has a molar mass of 125.0 g were dissolved in 35.00 g of camphor, what would be the resulting freezing point of the solution?
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