Hot-air balloons float because the air caught inside the balloon is heated up by a burner, making it less dense than the air outside. As the burner heats the air, it expands and some of the air escapes; that's what makes it less dense
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4. -ol
5. cyclic ketone
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biology stuff
sorry it's hard to explain
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One of the errors for low percentage of magnesium could be because not all the magnesium may have reacted.
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During the heating process, if the magnesium have not reacted completely, it can lead to low percentage of magnesium in the oxide formed. The product may still look a bit greyish rather than whitish after the heating process.
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Sublimation is a phase transition that occurs when a solid changes into a gas — or, as
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