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For that same charge the residual eutectic liquid weighs about

  • A.250 kg
  • B.13 kg
  • C.192 kg
  • D.308 kg

Answer: C

Silver is confined to the liquid, so the liquid mass is the silver in the charge divided by the eutectic silver fraction, 5 over 0.026. Repeating the skim and remelt on successive batches is what concentrates the silver in Pattinson's process.

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