A next$-$generation light water, U$-235$ powered nuclear fission reactor has an

overall efficiency of $45\%$ and an average power output of $2\mathrm{.}3$GW$.$ For one year

operating at full capacity, calculate a$)$ the number of joules produced; b$)$ the

number of fission events of U$-235$ that were required to produce those joules $($use

the efficiency, and the fact that this plant averages $3\mathrm{.}2$x$10-11$ J$/$fission$)$; c$)$ the mass of unenriched uranium oxide $($U$3$O$8)$ that had to be mined for that number of fissions $($remember that not all U is U$-235)$; and d$)$ the current market cost of that uranium oxide if it is purchased at this week$$s spot price of $88\mathrm{.}54$$ per pound $($be aware of units!$)$; e$)$ what does this price not include?