Practice Exercise Some Thanksgiving dinner chefs "brine" their turkeys before roasting them to help the birds retain moisture and to season the meat. Brining involves fully immersing a turkey for about $6$ hours in a brine $($salt solution$)$ prepared by dissolving $2\mathrm{.}0$ pounds of salt $)=(58\mathrm{.}44\frac{g}{m}ol$ in $2\mathrm{.}0$ gallons of water $($a recipe from an American cookbook$).$ Suppose a turkey soaking in such a solution is left for $6$ hours on an unheated porch. At what temperature in $C$ is the brine in danger of freezing? The $K_f$ of water is $1\mathrm{.}86\frac{C}{m}$; assume that $i=1\mathrm{.}82$ for this NaCl solution.