Are all equally configured covalent bonds equally strong?

[petrushka.googol]

Oxygen and carbon have double covalent bonds.

 

Are these bonds of equal strength? (as the number of bonds are the same)

 

Please advise.

 

Thanks in advance.

[swansont]

Why would they be the same strength?

[mississippichem]

The effective nuclear charges of carbon and oxygen atoms are different, so are their atomic radii and electronic configurations. Their double bonds will be of different energies as a result.