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What is the activation energy for a reac...

What is the activation energy for a reaction if its rate double when the temperature raised from `20^@C` to `35^@C` ? `(R=8.314J//mol//K)`

A

`34.7 kJ mol^-1`

B

`15.1 kJ mol^-1`

C

`342 kJ mol^-1`

D

`269 kJ mol^-1`

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