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Calculate the magnitude of ring strain e...

Calculate the magnitude of ring strain energy in `("kJ"//"mol")` of cyclopropane from the following data :
`Delta_(f)H[C_(3)H_(6)(g)]=55,Delta_(f)H[C(g)]=715.0`,
`Delta_(f)H[H(g)]=220, Be (C-C)=355, " BE "(C-H)=410("all in kJ"//"mole")`

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