Gold in
powder is the gold pure, the gold chemically is a noble metal, the gold in bar and
jewelry is a alloy, that could be with silver or cooper, because this had the
gold 18K, that means that in a 20 part formula was for 18 parts of gold was 2
parts of silver, and normally in nature the gold is already mixture with
silver, so normally is find a alloy of gold and silver, and the 18K is 18 of
gold for 2 of silver.
Rute Bezerra de Menezes Gondim
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