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Why should you not lift the lid of the crucible to let the smoke out while burning magnesium?
Wiki User
∙ 11y ago
you should :)
Wiki User
∙ 11y ago
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Why must you make sure the white smoke does not escape from the crucible when burning the magnesium ribbon?
Inhalation of magnesium oxide fumes can cause metal fume fever .
If some magnesium oxide had escaped from The Crucible would the percentage composition calculation of magnesium be too high or too low?
The percent of Mg calculated will be too high. Let's say that you reacted 1.00 g of Mg and made some MgO, but so much MgO escaped as smoke that only 1.00 g of MgO was left. You would then conclude from the numbers that the mass of O in the MgO was zero! This would lead you to conclude that the percent of Mg in the MgO was 100 %, which is silly and clearly in error. Although this is an extreme example, it illustrates that the loss of MgO as smoke from the crucible leads to a percent of Mg (calculated) that is above the expected 60.3 %.
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Why must you make sure the white smoke does not escape from the crucible when burning the magnesium ribbon?
Inhalation of magnesium oxide fumes can cause metal fume fever .
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