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What is the final concentration of NaOH when 335 mL of 0.75 M NaOH are mixed with 165 mL of 0.15 M NaOH?
The pH of a 0.40 M HF(aq) solution is 1.93. Calculate the change in pH when 0.356 g of sodium fluoride is added to 50.0 mL of the solution. Ignore any change in volume.
A student was using the concentrations of pipet calibration data listed in the Background Information for the determination of ka or propionic acid. Explain the problem the student encountered when preparing the following equilibrium mixture.
Sulfur trioxide dissolve in water, producing H2SO4. How much sulfuric acid can be produced from 13.5 mL of water and 26.1g of SO3?
A 184-mg sample of Na2CO3 is dissolved in H2O to give 3.00L of solution. What is the concentration of Na+ in parts per million (ppm)?
a 25 ml of sample of HNO3 is neutralized by 32.1 ml of 0.150 M KOH(aq). What is the molarity of HNO3?
Ammonia, NH3, is a stronger ligand than Cl- but weaker than CN-. Complete the balanced equations for the reactions that are predicted to occur
In combustion analysis, 2.00mg of vitamin C yielded 3.00mg CO2 and 0.816mg H2o. From mass spectrometry, it was found that the molecular weight of vitamin C is 176amu. Determine the mass composition of vitamin C, its empirical formula, and its molecul..
How fast must a 50.2-g tennis ball travel to have a de Broglie wavelength equal to that of a photon of green light (5400 Å).
using 1.16x10^-12 for ksp, calculate how many milligrams of Ag2CrO4 will dissolve in 10mL of H2O
Calculate the pH of a 0.130 M solution of aniline C6H5NH2. The Kb of aniline is 4.30 x 10-10.
What are the experimental conditions of T and P that willbe used to calculated the mass of air in the flask? b) Calculate the density of air at the experimental conditiosnidentified in part a. c) Calculate the mass of air in the flask before the liqu..
The procedure calls for the addition of 7-8 drops of aqueous NaOH. What is the purpose of the base here? Be specific and show the reaction that occurs
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