what should magnesium ribbon be cleaned before burning in air
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Explanation:
Magnesium ribbon should be cleaned with sandpaper before burning in the air. It should be cleaned before burning due to the following reasons: Magnesium very reactive element which rapidly reacts with oxygen in the air to form a white layer of magnesium oxide and this layer will not burn.
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Answer:
Oxygen gas is formed in the tube connected to the positive electrode. Hydrogen gas is produced in the tube connected to the negative electrode. The process produces twice as much hydrogen gas as oxygen gas. The hydrogen is collected in an upside-down test tube and put over a candle flame.
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