Some of the common problems that affect the big toe joint include: Bunions. Bunions are an enlargement of the big toe joint and can cause pain from shoe pressure or from damage occurring within the joint. Our goal when treating bunions is to eliminate pain and stop or slow the growth of the bunion.
We know that volume occupied by one mole of a gas is its molar volume. This applies to a liquid and a solid too. So, molar volume of water, a liquid is the volume occupied by one mole of water, in any form. So, 1 mole of water occupies 18 grams. Since density of water is almost equal to 1, we take the grams of water as volume of water. So, Molar volume, or the volume occupied by one mole of water would be 18 milliliters.
Avogadro's number tells us there are 6.022 x 1023 molecules of water per mole of water. So, next we calculate how many molecules there are in a drop of water, which we determined contains 0.002775 moles: Put another way, there are 1.67 sextillion water molecules in a water drop.