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How do we know if a buffer is more effective against an added acid or an added base?
Categorize each of the following as either ionic, covalent, or metallic bonding. 1. Molecular formula= 2. electron sharing= 3. alloy= 4. nonmetal with nonmetal
Calculate the mass of the sample of silver. Can you please explain how you answered this question so I can understand it on my final?
The pH of a white vinegar solution is 2.29. This vinegar is aqueous solution of acetic acid with a density of 1.09 g/mL. What is the mass percentage of acetic acid in the solution?
Calculate the mass of Sodium Nitrate required to prepare 50cm3 of 0.2 moll-1 solution.
What is the pH of a solution prepared by mixing exactly 64.9 mL of 0.200 M HC2H3O2 with 24.7 mL of 0.400 M KOH. (Ka for acetic acid equals 1.8 x 10-5).
In the standardization of NaOH, 38.76 mL of NaOH was required for 0.8169 g potassium acid phthalate. Estimate the accuracy we should expect in the molarity of the NaOH solution assuming the weighing error is ±0.1 mg
consider a particle in a one-dimensional box of length l in its lowest energy ground stationary state. calculate the
How many grams of F2 must react with NaCl in the following reaction if 800 kJ of energy are released. 2NaCl + F2 --> 2NaF + Cl2, ΔH = -320 kJ
69.7 grams of a solute with a molecular mass of 2790 grams are dissolved in enough water to make 1.00 dm(3) of solution at 20 degrees C. What is the osmotic pressure of the solution? express your answer in kPa
What is the hybridization of the nitrogen atom in sulfathiazole? Assuming that the sulfur atom is sp2-hybridized, how many -electrons are there in the sulfathiazole ring?
Complete the following table for this titration. Data Table P2: Titration of citric acid in orange juice with sodium hydroxide. concentration of OH-: 0.0769 M volume orange juice: 9.40 mL mass orange juice: 9.56 g volume of OH- solution
A mixture contains H2 at 325torr pressure, N2 at 475torr pressure, and O2 at 650torr pressure. What is the total pressure of the gases in the system
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