The number of molecules present in 112ml of He gas at `273^(o)`C and 2 atm are

Calculate the number of molecules in 1 ml of O_(2) at NTP.

If the volume of a drop of water is 0.0018 mL then the number of water molecules present in two drop of water at room temperature is :

If the volume of a drop of water is 0.0018 mL then the number of water molecules present in two drop of water at room temperature is :

The number of moles of H_(2) in 0.224 L of hydrogen gas a STP (273 K, 1 atm) assuming ideal gas behaviour is

Calculate the ratio of number of molecules in 10 L of O_(2) and 10 L of N_(2) at 25^(@)C and 1 atm. State the law used in the calculation

The total number of neutrons present in 54mL H_2O(l) are :

The total number of neutrons present in 54mL H_2O(l) are :

The average kinetic energy of one molecule of an ideal gas at 27^@C and 1 atm pressure is [Avogadro number N_A=6.023xx10^(23) ]

The total number of moles of neutrons present in 108 mL H_(2)O(l) are

The rms speed of helium gas at 27^(@)C and 1 atm pressure is 1100 ms^(-1) . Then the rms speed of helium molecules at temperature 27^(@)C and 2 atm pressure is