ORIGINAL: 2slow2matter
no, water displacement is due entirely upon volume. The larger the object is physically, the more water it will displace. Also, volume shaped correctly will help as well. Volume is independent upon mass, and mass is independent of bouyancy. However, density is dependent upon both mass and volume, and is one factor in bouyancy. Just technicalities, and it really doesn't matter. I just brought it up because someone in a post above said that balsa would float, and they are correct.
I disagree, an floating object only displaces a volume of water that weighs the same as the object. If volume was what mattered then boats wouldnt sink lower when they are weighed heavier becuase they would still have the same volume. However when you load an object into a boat, the boat will sink more and displace an amount of watere whose wieght is equivilent to the added wieght of the boat. To carry the idea further a 1 cubic foot chunk of wood will displace more water than a 1 cubic foot chunk of foam. Volume only becomes important whan an object sinks completely. But anyways im just being pedantic now. Like you said, either way Balsa will float.