The notation  hydrated compound ânH2O , where n is the number of water molecules per formula unit of the salt, is commonly used to show that a salt is hydrated. The n is usually a low integer, though it is possible for fractional values to occur. For example, in a monohydrate n is one, and in a hexahydrate n is 6.
When does spring start? How you define the first day of spring depends on whether you follow the astronomical or meteorological seasons. This year, spring will take place between March 20 and June 21, if you use the astronomical method. But it starts slightly earlier, between March 1 and May 31, if you follow the meteorological calendar.
Confidence votes 51. August is a Summer month, The first day of fall starts when the next soltice comes around which is usually on the 21 of the month. I cant remember when that is except March 21 is the first day of spring, June 21 is the first day of summer so Sept 21 must be fall.