mercury has higher density than water. does this mean that the molecules of Fe are heavier than of H2O?explain

Question

i mean Hg not Fe..coz Fe is for Iron

Answer 1

Both points expressed above are true. A molecule of Hg is indeed heavier that a molecule of air.

But to say that comparing density will tell how molecular weight compares will not always be true. Density is weight (or mass, it's expressed both ways) per volume so it could be that the density difference is because of how close together the molecules are.

Example: Argon (atomic weight - almost 40) is a gas in normal conditions. It's less dense than water (molecular weight - about 18).

Answer 2

Density Of Water And Mercury

Answer 3

Yes, Mercury atoms are heavier than water molecules, more than 4 times heavier

Answer 4

yes Hg molecules are heavier than H20 because the molecular weight of Hg is 200.59 and the combined weight of H20 is 17.999 thus when you find the density of each the weight will be a factor in finding the density.

Answer 5

I'm not a physics person but could it be that the molecules are closer together and therefore the heavier density?

Answer 6

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No. While it happens to be true in this case, density is controlled by both weight of atoms in a substance, and the particular structure. For instance, water is more dense than ice (both are H2-0), and diamond is more dense than graphite (both carbon).

Answer 7

Yes. The nucleus of Hg contains significantly more protons and nuetrons (the signifcant mass-containing subatomic particles) then two hydrogen and one oxygen atom.