The solubility product for lead (II) chloride, PbCl2 is: Ksp = 1.7 × 10‑5. What is the solubility of PbCl2 in a solutio

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The solubility product for lead (II) chloride,
PbCl2 is: Ksp = 1.7 ×
10‑5. What is the solubility of
PbCl2 in a solution of 1.0 M CuCl2?
Report your answer in units of grams per liter? (M.W. of
PbCl2 is 278.1 g/mol)
A sample of gas from a basement containing radon-222 has an
activity of 7 pCi/L, which is above the epa limit of 4 pCi/L. This
isotope has a half-life of 3.8 days. If no additional radon-222
entered the basement, how many days would it take for the activity
to decline to a safe level of 4 pCi/L?
An acid-base titration is used to standardize a solution of
NaOH. A student adds 25.00 mL of a 0.1530 M KHP solution to a
flask, and adds a few drops of a phenolphthalein indicator. At the
start of the titration, the initial volume of NaOH in the the
burette is 35.09 mL. The student titrates until the phenolphthalein
end point is reached and reads the final volume on the burette as
5.64 mL. What is the molarity of the NaOH solution?