Mass and Mole Fractions
Автор: ChESS Academy Now
Загружено: 2016-08-06
Просмотров: 806
Описание:
A miner finds a piece of ore containing 25 wt% gold, 42 wt% silver, the rest copper. The mass of the mixture is 125kg. He wants to remove some silver from the mixture, from 42 wt% to 28 wt%. Copper and gold contents inside remain untouched.
a) Find the final mass of the ore after the removal of silver
b) determine the mole fraction of silver before and after the removal
c) If the price of silver is $655.55/kg, what is the value of the silver removed?
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