Question

conduct experiment to know about the gas present in exhaled air ​

Answer 1

Answer:

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Explanation:

Breathing Everyone knows that we breathe in oxygen and breathe out carbon dioxide. But that's not technically true. The truth is we breathe in air and breathe out air... so what's the difference? Inhaled Air So, we need oxygen to live, but do you know how much of the air is made up of oxygen? 80%? 75%? ....it actually only makes up about 21% of the air. So what else is in there?The air that is all around us is made up of mostly nitrogen, about 78% nitrogen in fact. So what about the other 1%? ...The other 1% is made up of 0.04% carbon dioxide, some water vapour and other gases such as argon, helium and neon.

Answer 2

Answer:

Limewater can be used to detect carbon dioxide. If carbon dioxide is bubbled through limewater then it turns from clear to cloudy/milky in colour. This is why limewater used in a simple respirometer can show that more carbon dioxide is present in exhaled air compared to inhaled air.

Explanation:

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