Chemistry, 22.03.2021 21:00 mooreadrian412

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and
water.
4Au(s) + 8NaCN(aq) + O2(g) + 2H2O(1) ►
4NaAu(CN)2(aq) + 4NaOH(aq)
a. Determine the mass of gold that can be extracted if
25.0 g sodium cyanide is used.
b. If the mass of the ore from which the gold was
extracted is 150.0 g, what percentage of the ore is
gold?

Answers: 3

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