Graph, on a single hs plot, the isotherm for propane at 20°c and the isobar for propane at 1 bar.
use the data to estimate the slopes of each curve at the point where they cross. that is, numerically estimate \left(\frac{\partial h}{\partial s}\right)_t(∂h∂s)t and \left(\frac{\partial h}{\partial s}\right)_p(∂h∂s)p at 20°c, 1 bar.
h=517.6 kj/kg s=2.194 kj/kg-k
in the slides, i stated that \left(\frac{\partial h}{\partial s}\right)_p(∂h∂s)p = t. prove that this is true. compare this value to the answer estimated from the data.
note: i am not asking you to do \left(\frac{\partial h}{\partial s}\right)_t(∂h∂s)t because it is much more difficult than you are expected to be able to do at this stage.