A balloon contains $$1500\,{m^3}$$ of helium at $${27^ \circ }C$$ and $$4$$ atmospheric pressure. The volume of helium at $$ - {3^ \circ }C$$ temperature and $$2$$ atmospheric pressure will,
The average translational kinetic energy of $${O_2}$$ (relative molar mass 32) molecules at a particular temperature is $$0.048\,eV.$$ The translational kinetic energy of $${N_2}$$ (relative molar mass 28) molecules in $$eV$$ at the same temperature is
A vessel contains 1 mole of $${O_2}$$ gas (relative molar mass 32) at a temperature $$T.$$ The pressure of the gas is $$P.$$ An identical vessel containing one mole of $$He$$ gas (relative molar mass 4) at a temperature $$2\,T$$ has a pressure of