Question

why does magnesium ribbon start floating in hot air​

Answer 1

Explanation:

Magnesium reacts with water to form magnesium hydroxide and hydrogen gas as:

Mg+2H

2

O→Mg(OH)

2

+H

2

The hydrogen gas evolved due to this reaction sticks on the surface of magnesium ribbon making it float in hot water.

Answer 2

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The hydrogen gas evolved due to this reaction sticks on the surface of magnesium ribbon making it float in hot water.

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