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An open vessel at 27\,^\circ C is heated until 3/8th of the air in it has been expelled. Assuming that the volume remains constant, calculate the temperature at which the vessel was heated
107\,^\circ C
207\,^\circ C
Volume occupied by molecules of one mole gas at NTP, each having radius of cm is:
Equal masses of ethane and hydrogen are mixed in an empty container at . The fraction of the total pressure exerted by hydrogen is
The simplest formula of a compound containing of element X and of element Y is
XY
atoms of an element weights 1.15 g. The atomic mass of the element is
46.0 u
23.0 u
11.5 u
92.0 u