Plz do question no 2 and 3
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2nd ka ans
By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmospher
3 rd ans
Air is a mixture of gases consisting of approximately 4/5 Nitrogen and 1/5 Oxygen. Like all matter, air has weight and takes up space. It can also be compressed, unlike solids and liquids. These three properties will be studied in this investigation.
By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmospher
3 rd ans
Air is a mixture of gases consisting of approximately 4/5 Nitrogen and 1/5 Oxygen. Like all matter, air has weight and takes up space. It can also be compressed, unlike solids and liquids. These three properties will be studied in this investigation.
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