A voltaic cell consists of a Pb$/$Pb$2+$ half$-$cell and a Cu$/$Cu$2+$ half$-$cell at $25$C$.$ The initial concentrations of Pb$2+$ and Cu$2+$ are $0\mathrm{.}0510$ M and $1\mathrm{.}50$ M$,$ respectively.

Part A

What is the initial cell potential?

Express your answer using two significant figures.

$E_{\text{c}\text{e}\text{l}\text{l}}=,V$

Part B

What is the cell potential when the concentration of $C{u}^{2+}$ has fallen to $0\mathrm{.}230M?$

Express your answer using two significant figures.

Part C

What are the concentrations of $P{b}^{2+}$ and $C{u}^{2+}$ when the cell potential falls to $0\mathrm{.}35V?$

Enter your answers numerically separated by a comma. Express your answers using two significant figures.