A piston$-$cylinder assembly contains $0\mathrm{.}7$ lb of air initially at a pressure of $30l\frac{b_f}{i}{n}^2$ and a temperature of $300F.$ The air is heated at

constant pressure until its volume is doubled. Assume the ideal gas model with constant specific heat ratio, $k=1\mathrm{.}4.$

Determine the work and heat transfer, in Btu.

Step $1$

Correct Answer $($Used$)$

Determine the work, in Btu.

$W_{12}=$

Btu

Step $2$

Determine the heat transfer, in Btu.

$Q_{12}=$

Btu