question_answer

What is the cell potential (standard emf, E°) for the reaction below? \[\frac{x+2}{6}=\frac{y+4}{3}=\frac{z+1}{2}\]and\[{{\cos }^{2}}A+{{\cos }^{2}}C={{\sin }^{2}}B,\] \[\Delta ABC\] \[\left| \begin{matrix}    x+y+2z & x & y  \\    z & y=z+2x & y  \\    z & x & z=x+2y  \\ \end{matrix} \right|\]

A) \[=k{{(x+y+z)}^{3}},\]   

B) \[\frac{x}{\log x}\]

C) \[\frac{1}{e}\]  

D) \[{{e}^{2}}\]