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A buffer solution is prepared by adding 15.00 g of sodium acetate ( NaC2H3O2), and 12.50 g of acetic acid to enough water to make 500 mL of solution. What is the pH of the buffer?
what mass of CH3CO2H is required to prepare 100.00ml of a 0.48M acetic acid solution?
What is the concentration of each ion in a solution formed by mixing 44.0 mL of 0.100 M Na2SO4 and 25.0 mL of 0.150 M KCl?
A 1-L flask is filled with 1.30 g of argon at 25 degrees Celsius. A sample of ethane vapor is added to the same flask until the total pressure is 1.05 atm. What is the partial pressure of argon in the flask?
A water pipe fills a container that measures 189 cm , 307 cm ,272 cm in 97 seconds, What is the rate of flow in the pipe in liters per minute.
Give the number of atoms of the specified element in a formula unit of each of the following compounds, and calculate the molecular (formula) mass
Suppose the pH of the water is 4.59 and that the concentration of iron(II) in the water is 7.99x 10-5 M, what is the potential of the corrosion reaction under the above conditions at 298 K?
Calculate the molar mass of an unknown molecular compound mixed with solid camphor, C10H6O, heated and then cooled giving the following data. Show all steps in calculation.
the instrument response S for each of the five solutions, measured with a colorimeter, was found to be 0.240, 0.437, 0.621, 0.809, and 1.009, respectively. What was the concentration of Fe3+ in the water sample?
How many grams of aluminum must be used to produce 5.00 grams of hydrogen gas?
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.434 grams of iron and 12.2 mL of 0.52M copper(II) sulfate react to form as much product as possible.
How many grams of propane (C3H8) are required to heat all of the water in a 50 gallon water heater from 23.4oC to 65.0oC if the water heater (the jacket which contains the water)
A 100 ppm quininesulfate ( MW = 782.97 g/mol) solution was used as the standard. Assuming that your original (undiluted) sample contained 142 ppm of quinine sulfate, calculate the amount in ppm of quinine in the sample.
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