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A student performing this lab measured the initial pH of one of his phosphate buffer solutions to be 7.68. After adding 0.25 mL of 0.50 M NaOH, the pH of the same solution changed to 8.05. Calculate the buffer capacity (? mmol OH-/? pH) of this solution to two decimal places.
Determine how many moles of carbon dioxide should be combined to the system to bring the equilibrium carbon monoxide concentration to 0.715 mol/L?
what will be the final temperature of the solution in the calorimeter? The heat of solution,delta H solution, ofCaCl2of is -82.8kj/mole.
Ammonia and oxygen react to form nitrogen and water. How many grams of N2 can be produced when 6.30g O2 reacts?
A 2.41-L container is filled with 189 g argon. If the pressure is 10.0 atm, what is the temperature?
What is the potassium concentration of a solution formed by combining 50.0 mL of 0.400 M KCl with 50.0 mL of: a) 0.100 M PdCl6, b) 0.800 M PdCl6 , c) water, d) 0.200 M PdCl6 (If The Ksp for K2PdCl6 = 6 x 10^-10)
If 1.00 g of an unknown molecular compound contains 8.35 x1021 molecules, what is its molar mass
What color- red or blue- would you expect each of the following to produce when added to litmus
To calculate the number of molecules of a gas using ideal gas law and Avogadro's number - How many ozone molecules are present in 1.0 L of air under these conditions?
Elements, which has the largest first ionization energy and equation correctly represents the first ionization of calcium?
The atmospheric pressure in La Grande (683 atmospheric pressure) is significantly lower than that of Portland
What is the density of hydrogen gas at 23.0^C and a pressure of 1640 psi?
Using extraction techniques how would you separate a mixture of aniline and toluene using dichloromethane as the extraction solvent?
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