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Problem- What is the chloride ion concentration, [Cl-], in a solution made by adding 20.0 mL of water to 80.0 mL of a .125 M CaCl2 (aq) solution?
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question what molarity of aqueous sodium chloride solution can be expected to show the same conductivity as 0.0050 m
Question- You need to prepare 100.0mL of a pH=4.00 buffer solution using 0.100 M benzoic acid pKa = 4.20 and 0.200 M sodium benzoate
if the observed rate constant for the oxidation reaction at 35 C is 6.75*10^-2 min^-1, and at 25 C is 3.25*10^-2 min ^-1. what is the activation energy for the reaction
What mass of solid sodium formate (of MW 68.01) must be added to 110 mL of 0.55 mol/L formic acid (HCOOH) to make a bu?er solution having a pH of 3.84? Ka = 0.00018 for HCOOH
what mass of Fe (OH)3 would be produced by reacting 75.0 mL of a 0.0815M Fe( NO3)3 solution with 125 mL of a 0.150 M NaOH solution
Problem- Make a concentration cell using 5mL of 1.0M with 5mL of 0.1M copper (II) sulfate. Write balanced net ionic equations, include concentrations.
Plan and Design Lab: To Determine the water of crystallization of a hydrated salt XY•nH2O and to determine the value of n in the formula XY•nH2O with a relative formula mass of 392.14.
Calculate the volumetric size of a water molecule for water in the form of ICE just below the melting point. Give answer in angstroms
Compute the pH of a solution made by mixing 242.2 mg of Tris in 10mLs of 0.170 M HCL and then diluting the mixture to 100mL with water. Explain the mw of Tris = 121.1 g/mol and pKa = 8.08.
Consider the fusion of boron 10 with an alpha particle. The products of the fusion are carbon and a proton. a) Write a nuclear reaction for this process.
N2H4+3O2----2NO2+2H2O The limiting reagent is O2 how many kg of NO2 are produced from the reaction of 75kg of the limiting reagent.
What volume of a concentrated HCL, which is 36.0% HCL by mass and has a density of 1.179g/mL , should be used to make 5.10 L of an HCL solution with a pH of 1.5
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