Question

Preparation and study of physical and chemical properties CO2 gas.

Answer 1

Answer:

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Answer 2

Answer:

Carbon dioxide (as a component of air) is a substance that surrounds us every day. In laboratory, carbon dioxide is not obtained from the air, carbon dioxide is prepared from carbonates by adding acids to the carbonates. In this experiment carbon dioxide is prepared by the reaction of marble with hydrochloric acid. In the second part of the experiment the characteristics of carbon dioxide are examined. These properties include the ability to smother flames and that carbon dioxide has a higher density than air.

Explanation:

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