which has the lowest density water, gold, hydrogen gas or gasoline?

Question

i need the one with the lowest density

Answer 1

Hydrogen gas, by far, has the lowest density out of those 4 choices.
You might think of it in terms of "what will float in what". Gold sinks in water, so it must be more dense. Gasoline float on water, so it is less dense. Hydrogen gas will definitely "float" in gasoline, so it is the lease dense.
Or you could simply look up each items density, they are pretty common substances, the values will not be hard to find.

Answer 2

the density of water is 8.34 lbs/gal. In order to find the one with the lowest density, you need to take the specific gravity of each and multiply it by 8.34lbs. Gold obviously has the highest density, which is why so little weighs so much. Hyrdogen weighs less than air, which is why it was the element used to fly the Hendenburg Blimp. Gasoline is lighter than water which is why it floats on top of it. Deductive reasoning would then suggest that Hydrogen would be the one with the lowest density. I think!!

Answer 3

Hydrogen

Answer 4

Hydrogen gas.

Answer 5

Hydrogen is the least dense at standard temperature and pressure.

Answer 6

hydrogen gas

density is defined as mass per volume.
just imagine we have them at the same volume. which one is lighter? of course it is hydrogen gas

Answer 7

Hydrogen. IF you could find a bathtub big enough, Jupiter would float !

Answer 8

hydrogen

Answer 9

Look at the periotic table and read your text book!!!! Very simple to figure out if you do this,