Gases & Solutions
States of Matter
In terms of Charles' law, explain why - 273 ∘C is the lowest possible temperature.
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When there is more deviation in the behaviour of a gas from the ideal gas equation PV=nRT:
Absolute scale of temperature is a consequence of:
Lithium has a bcc structure .Its density is 530kgm−3 and its atomic mass is 6.94gmol−1 .Calculate the edge length of a unit cell of lithium metal (NA=6.02×1023mol−1)
A closed vessel with rigid walls contains 1 mole of .92238U and 1 mole of air at 298K. Considering complete decay of .92238U to .82206Pbthe ratio of the final pressure to the initial pressure of the system at 298K is
Two gases A and B having the same volume diffuse through a porous partition in 20 and 10 seconds respectively. The molar mass of A is 49u. Molar mass of B will be
The sap in trees, which consists mainly of water in summer, rises in a system of capillaries of radius r=2.5×10−5m. The surface tension of sap is T=7.28×10−2Nm−1 and the angle of contact is 0∘. Does surface tension alone account for the supply of water to the top of all trees?
A gas bulb of 1L capacity contains 2.0×1011 molecules of nitrogen exerting a pressure of 7.57×103Nm−2. Calculate the root mean square (rms) speed and the temperature of the gas molecules. If the ratio of the most probable speed to the root mean square is 0.82, calculate the most probable speed for these molecules at this temperature.
The units of the van der Waals constant a are