The purity of gold alloys is expressed in karats, which is the mass fraction of gold multiplied by 24. Pure gold is 24 kt, whereas 18 kt gold jewelry typically contains 75% gold, 12.5% silver and 12.5% copper (by mass). Estimate the density of this 18 kt gold alloy.
Originally posted 2018-07-17 03:55:17. Republished by Blog Post Promoter