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Como duas substâncias colocadas longe uma da outra conseguem reagir sem ninguém misturá-las? O segredo está no movimento dos íons pela água. De um lado da placa está uma solução de iodeto de potássio, KI. Na água, ele se dissocia formando íons K⁺ e I⁻. Do outro lado está o cloreto de estanho, SnCl₂, que fornece espécies de estanho e cloreto em solução. Mesmo que as soluções sejam colocadas separadamente, as partículas dissolvidas estão em constante movimento térmico. Como inicialmente
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🔐 Parece uma trava de madeira simples… mas foi assim que os egípcios criaram o conceito de chave há mais de 4 mil anos! Com pinos e fendas, exigia uma chave única para liberar a tranca — um ancestral direto das fechaduras modernas. 📽️ Créditos ao perfil @la.ciencia.afirma — um conteúdo genial que revela a engenhosidade dos povos antigos! 👏 #TecnologiaAntiga #EgitoAntigo #CiênciaNaHistória #comcienciagaia
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