Answer to Question #93434 in Inorganic Chemistry for Saitama kalbo

Question #93434
A pure gold (24k) has a density of 19.32g/cm3. A wedding band weighs 3.50 grams. How much water must it displace (i.e what must its volume be?) if the band is in fact 24k gold?
Expert's answer

24k (k for karats) gold is a really pure one and it means that the band is made of a pure metal, which was quite strange for me. I never saw a band made of the pure gold. However, the volume, mass and density are all interrelated to each other as the following expression:


We can also say that it is 0.181 mL or 1.81*10-4 L of possibly displaced water (when the band will be sank in water).

P.S. The jewelry gold metal is always a complicated alloy of gold, silver, nickel and copper.

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