stoichiometry help

Question

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water.

4 Au(s) + 8 NaCN(aq) + O₂(g) + 2 H₂O(l)  4 NaAu(CN)₂(aq) + 4 NaOH(aq)

(a) Determine the mass of gold that can be extracted if 21.7 g sodium cyanide is used.

(b) If the mass of the ore from which the gold was extracted is 161.5 g, what percentage of the ore is gold?

 

Answer 1

Hi Eli O.,

That's 5 questions at once all on the same skill set. That's spamming.

-- Cheers, --Mr. d.