A recycling laboratory analyzes a \(1.080\text{ g}\) sample of a copper-rich alloy that contains only copper and silver. Chemical analysis indicates that the sample contains \(2.00\times10^{-3}\text{ mol}\) of \(\text{Ag}\). To confirm the analysis gravimetrically, a student dissolves the sample and adds excess \(\text{NaCl(aq)}\), causing all the \(\text{Ag}^+\text{(aq)}\) to be recovered as \(\text{AgCl(s)}\), while the copper species remain dissolved. The molar masses of \(\text{Ag}\) and \(\text{AgCl}\) are \(108.0\text{ g/mol}\) and \(143.5\text{ g/mol}\), respectively.

Which pair gives the expected mass of precipitate and the mass percent of copper in the original alloy?