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Eduard22sly

Answer: the answer is option B. Q, R, P

Explanation: the lightest gas (hydrogen) will diffuse first, then followed by carbon dioxide and then followed by air. Air is a mixture of gases. So air is heavier than hydrogen and carbon dioxide.

Answer:

28.96 g/mol.

Explanation:

Air is mostly Nitrogen and Oxygen ( in the ratio 4:1) so from the Molecular masses of these 2 gases we get a RMM of 28.96 g/mol.

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