In base alla tabella delle densitĂ (prima colonna) riportata a fianco se della cenere cade su un secchio contenente nafta galleggia o va a fondo? E se mettessi una chiave di ottone sopra ad un becker contenente mercurio, la chiave galleggia o va a fondo?
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In base alla tabella delle densitĂ (prima colonna) riportata a fianco se della cenere cade su un sec...
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