Prob. # $6]$ For a certain ideal gas, $R=0\mathrm{.}295k\frac{J}{k}g-K$ and $k=1\mathrm{.}3.$ Determine a$)$ the constant pressure specific heat, b$)$ the constant volume specific heat, and c$)$ the molecular mass of the given gas.

Prob. #$3]$ A pumping discharging water at $1$ MPaa and $165C.$ Determine the specific volume and internal energy of the water at the pump discharge.

Prob. # $4]$ A $500-$liter tank contains saturated mixture of water at $300$ kPaa $.$ If the saturated liquid occupies $10\%$ of the volume, determine a$)$ the the quality of vapor, and b$)$ the total mass of water in the tank.