Solved Prolems Under Thermodynamics

1.       calculate the of the molecules of nitrogen gas at stp that have speeds between  c and c+dt. when c =400m/s , dc=10m/s  molecular mass M =28g

2.       the density of an oxygen gas is 1.43gg/m³ at 0⁰C and 1.01*10⁵ Nm^-2 pressure. if its specific heat capacity at constant  volume Cv=20.8j/mol^-1k^-1 . Calculate the ratio of its specific heat capacity at constant pressure to that constant volume.

3.        a gas has a volume of 80m³ a stp. calculate (i)the new temperature and pressure if the gas is compressed adiabatically  to a volume  of 45m³ (ii) the workdone on the gas (Cp=1.68kjg^-1k^-1 , Cv =1.20kjkg^-1k^-1)

4.       by considering a rise in temperature of one kelvin, show that the fraction of heat energy used to do work against  the atmosphere  when a bar of iron expands in air is about 10^-6 (s.h.c of iron= 460Jkg^-1k^-1 expansivity of iron =3.6*10^-5k^-1, density of iron = 7.9*10³ kgm^-3, atmospheric pressure = 1.01*10⁵Nm^-2

SOLUTION TO THE  QUESTIONS ABOVE