Thursday
October 23, 2014

Homework Help: Chemistry

Posted by Dovahkiin on Saturday, February 19, 2011 at 3:37pm.

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 21.4 g sodium cyanide is used.

If the mass of the ore from which the gold was extracted is 126.0 g, what percentage of the ore is gold?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - To extract gold from its ore, the ore is treated with sodium ...
chemistry - To extract gold from its ore, the ore is treated with sodium cyanide...
Chemestry - To extract gold from its ore, the ore is treated with sodium cyanide...
Chemestry - To extract gold from its ore, the ore is treated with sodium cyanide...
Chemestry - To extract gold from its ore, the ore is treated with sodium cyanide...
chemistry - To extract gold from its ore, the ore is treated with sodium cyanide...
chemistry - To extract gold from its ore, the ore is treated with sodium cyanide...
Chemistry - To extract gold from its ore, the ore is treated with sodium cyanide...
CHEMISTRYYYY HELP - A sample of gold ore contains 22.0 g of gold metal per 100kg...
Chemistry - A metallurgist decomposes an unknown ore to the following metals. ...

Search
Members