Mute
Com.Ciência.Gaia
Quando um pedaço de melancia é colocado em uma câmara de vácuo, a pressão externa diminui rapidamente. A melancia é formada majoritariamente por água, distribuída dentro das células vegetais. Em condições normais de pressão atmosférica, a água entra em ebulição a aproximadamente 100 °C. Porém, a temperatura de ebulição não é uma propriedade fixa: ela depende da pressão externa. Ao reduzir a pressão dentro da câmara, diminui também a pressão necessária para que as moléculas de água passem do est
Follow
6
0
2
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