Mute
com.ciencia.gaia
🚨 O ouro que você usa é impuro… e quase ninguém sabe disso. Quando alguém compra uma joia de ouro 18 quilates, muita gente imagina que ela seja feita totalmente de ouro. Mas isso não é verdade. O termo “quilates” indica a fração de ouro presente na liga metálica. O ouro 24 quilates é considerado ouro praticamente puro, contendo cerca de 99,9% de ouro. Já o ouro 18 quilates possui 18 partes de ouro em um total de 24 partes, o que corresponde a aproximadamente 75% de ouro e 25% de outros metais,...
Follow
7
0
1
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