The in density causes an object to sink and the intensity causes an object to float.  Fill in the blank

The weight in density causes an object to sink and the weight intensity causes an object to float.

Explination:

I hope this helps, but I'm not sure if this is right or not.

b.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.