$"$ vavy mrad

Prob. # $9)$ The decrease in intemal energy of a $1\mathrm{.}25-kg$ ideal gas is $345$ kJ when the pressure decreases from $690$ kPaa to $138$ kPaa and the volume decreases from $0\mathrm{.}05m^3$ to $0\mathrm{.}14m^3.$ The $c_c=0\mathrm{.}6188k\frac{J}{k}g-K.$

A$.$ Determine the change in enthalpy

a$)-360\mathrm{.}2$ kJ

b$)+360\mathrm{.}2$ kJ

c$)-360\mathrm{.}2k\frac{J}{k}g$

d$)+360\mathrm{.}2k\frac{J}{k}g$

B$.$ Find the initial temperature

a$)1013\mathrm{.}6C$

b$)740\mathrm{.}6C$

c$)740\mathrm{.}6F$

d$)740\mathrm{.}6K$

C$.$ What is the final temperature?

a$)429\mathrm{.}6C$

b$)694\mathrm{.}2C$

c$)567\mathrm{.}6C$

d$)294\mathrm{.}6C$

D$.$ Determine the value of $c.$

a$)0\mathrm{.}64603k\frac{J}{k}g*$@$K$

b$)0\mathrm{.}64603$ Btu$/$b$-R$

c$)0\mathrm{.}64603k\frac{J}{k}gmo{l}^{-6}K$

d$)0\mathrm{.}64603Bt\frac{u}{p}$mol$-R$