Which of the following choices is not a potential application of the solubility product constant?
A. Determine reactant concentrations that will allow a precipitate to
form.
B. Use Ksp to find solubility.
C. Determine ion concentrations that will prevent a precipitate from
forming
D. Determine ion concentrations that will allow a precipitate to form.

14 days is the half-life of phosphorus-32

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

elements make up everything, and they combine to make compounds.

the answer is c