Figures below depict air enclosed in a cylinder by an air-tight piston.The piston has been pushed as shown in the figure (ii) so that the air occupies one-third of the length of the cylinder it previously occupied What would happen to
(a)number of molecules of air
(b)Volume of the air?
(c)pressure of the air?
(d)what is the normal atmospheric pressure in terms of height of mercury?
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A. no of air moles will not change.
B . Volume of air has decreased
C. pressure of air has increased
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