Which is heavier – an equal volume of water or gasoline?

Question: Which is heavier - an equal volume of water or gasoline?
- Keywords:
  gasoline,
  heavier,
  volume,
  water,
  weight
Asked by chloelou98 to Cesar, Emily, Jamie, Kate, Philippa on 15 Jun 2011.
- Jamie Gallagher answered on 14 Jun 2011:
  
  Water is heavier, it is more dense. You can tell this because gasoline would float on water so it is less dense so an equal volume would be lighter
- Philippa Demonte answered on 14 Jun 2011:
  
  @chloelou98 I couldn’t have explained it any better than @Jamie !
- Cesar Lopez-Monsalvo answered on 14 Jun 2011:
  
  Jamie’s answer is absolutely right!
  
  Just to provoke a bit of discussion, weight and mass are two different things. Weight depends on where you are standing. If it is on the surface of the Earth then that is easy. But if you are in space, or in free-fall, then weight loses its meaning, and then the two volumes weight the same (zero), although as Jamie said, water would still be denser, that is, it has more mass inside the same volume.
- Emily Robinson answered on 15 Jun 2011:
  
  Great answers. Don’t think there is anything I could add. 😀

Question: Which is heavier - an equal volume of water or gasoline?