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2Ag^(+)(aq)+M(s)rarrM^(2+)(aq)+2Ag,E^(@)...

`2Ag^(+)(aq)+M(s)rarrM^(2+)(aq)+2Ag,E^(@)=0.940V`
What is the value of `E^(@)` for the half reaction, `M^(2+)(aq)+2e^(-)rarrM(s)`?
`{:(E^(@)//V),(Ag^(+)(aq)+e^(-)rarrAg(s)0.99):}`

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