The leaching of gold can be represented by the equation 
In this reaction, identify the oxidant, the reductant and the oxidation numbers of the elements which change.
Definitions:
Bias
A tendency to lean in a certain direction, either in favor of or against a particular thing, often in a way that is considered to be unfair.
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Q6: A row of the periodic table is
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Q38: When an atom is represented by the
Q41: An aqueous solution is considered to be
Q56: The isotopes <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7799/.jpg" alt="The isotopes
Q61: Sodium chlorate is used as an oxidizer
Q69: Write the formula for diamminedichloroethylenediaminecobalt(III) bromide.<br>A) [CoCl<sub>2</sub>(en)(NH<sub>3</sub>)<sub>2</sub>]Br<br>B)
Q78: Iron (III) chloride hexahydrate is used as
Q80: Zinc acetate is used in preserving wood