Kinetic Theory ...

The mass of hydrogen molecules is $$3.32 \times 10 ^ { - 24 }$$ gm. If $$10 ^ { 23 } \mathrm { H } _ { 2 }$$ molecules strike $$2$$ sq. cm are per second with velocity of $$10 ^ { 5 }$$ cm/sec at an angle of $$45 ^ { \circ }$$ to the normal to wall, then the exerted pressure will be 

Two moles of helium gas are taken along the path ABCD (as shown in figure). The work done by the gas is

The volume of an ideal gas is 1 litre and its pressure is equal to 72 cm of mercury column. The volume of gas is made $$ 900 cm^3 $$ by compressing it isothermally. The stress of the gas will be 

What is the mass of :

Two kg of a monoatomic gas is at a pressure of $$4 \times 10^4 N/m^2$$ . The density of the gas is $$8 kg /m^3$$. What is the order of energy of the gas due to its thermal motion ?

An open container is placed in atmosphere. During a time interval, temperature of atmosphere increases and then decreases. The internal energy of gas in container

For ideal monoatomic gas,the universal gas constant R is n times molar heat capacity at constant pressure $$ C_p $$ Here n is :-

Half mole of an ideal monoatomic gas is heated at constant  pressure of 1 atm from $${ 20 }^{ 0 }C$$ to $${ 90 }^{ 0 }C$$ . Work done by gas is close to : ( gas constant R=8.31 j / mol -k ) 

One mole of an ideal gas expands against a constant external pressure of 1 atm from a volume of $$10d{ m }^{ 3 }$$ to a volume of $$30d{ m }^{ 3 }$$. What would be the work done in joules?

N moles of a monoatomic gas is carried round the reversible rectangular cycle ABCDA as shown in the diagram. The temperature at $$A$$ is $$T _ { 0 }$$ . The thermodynamic efficiency of the cycle is