Question

Plz answer this fast​

Answer 1

Answer:

hi may be the answer is there are so many bubbles at the top of the test tube when you do the experiment

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Answer 2

Answer:

When a splinter is brought near the mouth of the test tube, the splinter will glow with a bright flame because the bubbles produced by hydrilla branches are oxygen molecules. Oxygen molecules are produced by hydrilla branches when it is kept in sunlight due to process of photosyntesis.