Question

a tyre tube with the pin hole is first filled with oxygen to a pressure 30 lab per square inch and allowed to leak out then it is filled with Nitrogen gas to the same pressure and allowed to lick it out again in which case the time taken will be more and why​

Answer 1

$\texttt{Does tire pressure measured by a meter on tire gauge change with load? (I am not interested in pressure produced by car tires onto the road).</p><p></p><p>Car spec usually says "inflate to 220kPa normal load, 300kPa full load". Does this mean the measured pressure should be 300kPa only after the car was loaded, or can one inflate the tires to the recommended 300kPa while empty and then load the car with 500kg without needing to re-measure the pressure?</p><p></p><p>There are basically both answers to be found when researching the non-physics forums on the internet:</p><p></p><p>One explanation says that the tire will compress under bigger load, making the volume inside the tire smaller, hence pressure higher. It also states this is the reason why the spec plate in the car has two values - you should simply expect to measure higher pressure on the tires while the car is loaded.</p><p></p><p>There are also explanations stating that the air does not escape from the tire, hence the amount of air inside the tire is constant and the pressure measured on the tires is constant even if the car is loaded (and based on observations, tires normally compress when the car is loaded). This would mean one needs to put more air into the tires when the car is loaded to ensure higher pressure.</p><p></p><p>To a layman, both sound feasible.</p><p></p><p>Is one of the explanations simplifying based on normal load assumptions? (i.e. tire pressure does not change if car is loaded with at most 1000kg, but would change if there was an enormous load put on the car?)}$

Answer 2

Answer:

o=32 n=28

Explanation:

o2 takes more time because

rate of diffusion or effusion is inversely proportional to mass