Well, a good boat is.
no
good info about this is on 1227.com
Oxygen is less dense.
No, it is more dense. If it were less dense it would float.
Yes ammonia is less dense than air
if it sinks its more dense if it floats its less dense
it is less dense
If more dense, it will sink when put into water; if less dense it floats.
its has more pressure
Gases are less dense than solids.
No, oil is less dense than saliva.