saturated steam at $1\mathrm{.}4$ bar flowing at $225$ kg$/$h is used to heat $125$ kmol$/$h of pure oxygen gas in a countercurrent heat exchanger. the oxygen gas enters at $30$c$,1\mathrm{.}4$ bar. assume the pressure drop is negligible and no subcooling of the stream for heating. the latent heat of steam at given conditions is $2230\mathrm{.}95$ kj$/$kg$.$ the heat capacity of oxygen gas can be taken frim the equation cp$=29\mathrm{.}88-0\mathrm{.}01138$t where t is K and Cp is kj$/($kmol$-$k$).$ find teh exit temoerature of oxygen gas stream