An ore contains 1.34% of the mineral argentite, \(\mathrm{Ag_2S}\) by weight. How many grams of this ore would have to be processed in order to obtain 1.00 g of pure solid silver, Ag?

This question uses mole concept & particle counting. Convert all given quantities into moles using n = given amount/molar mass, use Avogadro's number where needed to get particles, and then compare with the options; this matches option B.