the ques is 1(b) and 2 one.......plzzzz its urgent give ans fast
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A lit candle needs to draw oxygen from the air in order to continue burning. If you limit the amount of air available, the candle's flame eventually goes out once it uses up all the oxygen.
ankit3211:
is the ans fully correct.......
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1a) Air is necessary for burning because it contains the combustible substance oxygen
2)oxygen from the air binds to the magnesium increasing the mass
2)oxygen from the air binds to the magnesium increasing the mass
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