Question

Fig. shows a weather balloon. The balloon is shown partly filled with gas from a cylinder. Fig. The balloon contains no gas initially. When it is connected to the cylinder, gas enters the balloon. The pressure in the cylinder decreases. Explain why the molecules inside the cylinder i. exert a large pressure initially, ii. exert a smaller pressure in the cylinder when the balloon is filled.
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Answer 1

Answer:

i) since the cylinder is full the air molecules exert a pressure known as air pressure which depends on density of air molecules so they exert a large pressure on the walls of gas cylinder

ii)when the balloon is filled the number of gas molecules decreases so there is less pressure on the walls of container ie gas cylinder

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