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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > How many atoms of helium gas fill a spherical balloon of diameter 30.0 cm at 20.0 C and 1.00 atm? (b) What is the average kinetic energy of the helium atoms? (c) What is the rms speed of the helium atoms?

How many atoms of helium gas fill a spherical balloon of diameter 30.0 cm at 20.0 C and 1.00 atm? (b) What is the average kinetic energy of the helium atoms? (c) What is the rms speed of the helium atoms?

A vessel of volume 1660cm^3 contains 0.1mole of oxygen and 0.2mole of nitrogen. If the temperature of the mixture is 300K find its pressure.