William is a very prominent first name for men (#5 out of 1220, Top 1%) and also a very prominent surname for all people (#1923 out of 150436, Top 1%). (2000 u.s. demographics) William reached its peak rank of #2 in the U.S. in the 1910s, and is currently at #3.
Where space permits, allow to 1 square metre of water surface for each plant. The ideal and practical way to plant water lilies is in strong, plastic containers approximately 30 cm diameter x 12 cm deep. It is a simple task then to lift these containers for dividing every two years.
Hydrogen Bonding and Water. Hydrogen bonds account for some important qualities of water. Even though a hydrogen bond is only 5% as strong as a covalent bond, it's enough to stabilize water molecules. 1  Hydrogen bonding causes water to remain liquid over a wide temperature range. 2  Because it takes extra energy to break hydrogen bonds, water has an unusually high heat of vaporization. Water has a much higher boiling point than other hydrides. There are many important consequences of the effects of hydrogen bonding between water molecules: Hydrogen bonding makes ice less dense than liquid water, so ice floats on water.