What is the equation to finding watts?

An object has a weight of 500 on earth what is the mass of this object

Explain why electric current cannot exist if a current doesn't have a voltage source.

According to valence bond theory, which orbitals overlap in the formation of the bond in hf according to valence bond theory, which orbitals overlap in the formation of the bond in hf 2s on h and 2p on f 1s on h and 2s on f 1s on h and 1p on f 1s on h and 2p on f 1s on h and 3p on f