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You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.140 M sodium benzoate. How much of each solution should be mixed to prepare this buffer?
determine the number of carbon atoms in the compound. Natural abundances: 12C is 98.93% and 13C is 1.07%
Phosphate buffer has 3 ionizable groups, with pKa's of 2.15, 7.2, and 12.45. A 1.20 M solution of this buffer (250 mL) is found to have a pH of 6.0. A biochemist adds 30 mL of 1.0 M NaOH to this buffer. What is the resultant pH?
Coca-Cola used to contain 0.060% phosohoric acid by mass. Determine the pH of Coca-Coal prior to carbonation.
Environmental magazine about the success of global initiatives in solving environmental concerns, using the Montreal Protocol and ozone depletion as a focus.
Find the Concentration of KHP, standardized NaOH, and HCI So I have to find concentration of 3 solutions. Let's assume that I get a NaOH which has concentration of 1.0M How am I suppose to calculate the mass of KHP needed? Could someone tell me th..
A student takes 185. g of BaCl2, and reacts it according to the following equation: 3BaCl2 + Al2(SO4)3 → 3BaSO4 + 2AlCl3 How many moles of AlCl3 are formed?
4 hno3aq cus gt cuno32aq 2 h2ol 2 no2gconsidering which elements are being oxidized and reduced determine how many
Consider a diploid cell that contains three pairs of chromosomes designated AA, BB, and CC. Each pair includes a maternal and a paternal member (e.g., A^m and A^p.).
Which stage of ionization usually produces more ions and why?
The Ksp of barium fluoride is 1.0 x 10^-6. The Ksp of calcium fluoride is 3.9 x 10^-11. What is the remaining concentration of the first ion to precipitate when the second ion begins to precipitate?
what is the root mean square distance travelled by an iodine molecule in benzene at 25 Celcius in 1.0 seconds.
hydronium ion concentration using henderson-hasselbalch equation.1. what is the hydronium ion concentration of a
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