Questions
A long narrow uniform glass tube is closed at one end and contains a gas trapped by a mercury thread of length h. When this tube is held vertical with open end up, the length of the gas column is L. When the tube is turned upside down, the length of the gas column is doubled. If the pressure of atmosphere is 75 cm of Hg, the value of h in cm is
detailed solution
Correct option is B
As there is no indication of change of temperature, Boyle’s law is assumed. P1V1= P2V2. This gives (75+h)(LA) = (75-h)(2LA). Solve for hTalk to our academic expert!
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Two vessels separately contain two ideal gases A and B at the same temperature, the pressure of B being twice that of A. under such conditions. The density of A is found to be one-third of the density of B. the ratio of molecular weight of A and B is
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