$596248\mathrm{.}4592642.q3zqy7$

Jownhp to level $1$

Gold forms a substitutional solid solution with silver. Compute the weight percent of gold that must be added to silver to yield an alloy that contains $7\mathrm{.}4{10}^{21}Au$ atoms per cubic centimeter. The densities of pure Au and Ag are $19\mathrm{.}32$ and $10\mathrm{.}49\frac{g}{c}{m}^3,$ respectively. The atomic weights for gold and silver are $196\mathrm{.}97\frac{g}{m}ol$ and $107\mathrm{.}87\frac{g}{m}ol,$ respectively.

$Ex$: $12\mathrm{.}3wt\%$

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