15) ned flanders mixed silver nitrate and sodium chloride. immediately, ned observed a white solid fall to the bottom of the beaker. he filtered and dried the solid and determined that it was silver chloride. what is the evidence that a chemical reaction occurred? determine how much silver chloride ned obtained and explain how you determined the answer. (hint: law of conservation of mass)

Answer is:  the evidence that a chemical reaction occurred is formation of white precipitate (change of color).

Balanced chemical reaction: AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq).

Solutions of silver nitrate and sodium chloride do not have color.

From chemical reaction: n(NaCl) : n(AgCl) = 1 : 1.

n(NaCl) = n(AgCl).

m(AgCl) = m(AgCl) · M(AgCl).

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.