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Compute the expected pH of the acetate buffer and compare it with the pH determined by the pH meter. If they are different, suggest possible explanations. Compute the total concentration of the buffer.
Consider the diprotic acid mercaptoacetic acid, where the fully protonated form can be denoted by H2A. Calculate the pH of the solutions below.
a mole of atoms ions molecules or anything else contains avogadros number 6.022 x 1023 of these units. a mole of
What each test reveals about an unknown halide ion? Suggest another test which would confirm that identity. Addition of Cl2 and CH2Cl2 to an aqueous solution of an unknown halide ion led to a dark CH2Cl2 layer.
assume that core electrons completely shield valence electrons from the full charge of the nucleus and that valence
Calculate the masses of (a) KNO3 and, separately, (b) Ba(NO3)2 to add to a 0.110 mol kg^-1 solution of KNO3(aq) containing 500 g of solvent to raise its ionic strength
How many moles of ions are in 1.60 mol of K2SO4?
The mole fraction of gas A in a mixture is 0.48. If the total pressure of the container is 2.0 atm, what is the partial pressure of gas A?
given that the specific heat capacities of ice and steam are 2.06 jgdegc and 2.03 jgdegc the molar heats of fusion and
raise the temperature of an 12.5g piece of unknown substance from 13.0 oC to 26.2 oC. What is the specific heat for the substance?
a 5.00 ml sample of barium hydroxide is titrated to the phenolphthalein endpoint using hydrochloric acid. the five ml
What is the anode reaction during electrolysis of neutral aqueous copper(II) sulfate using inert electrodes
The boiling point of chlorform CHCL3 is 61.70 degrees C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in chloroform is aspirin
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