Frames can be made to hold the lenses in several different ways. There are three common styles: full frame, half frame, and frameless. Full frame glasses have the frame go all around the lenses. Half frames go around only half the lens; typically the frames attach to the top of the lenses and on the side near the top.
Ethanol is a monohydric primary alcohol. It melts at - 117.3Â°C and boils at 78.5Â°C. It is miscible (i.e., mixes without separation) with water in all proportions and is separated from water only with difficulty; ethanol that is completely free of water is called absolute ethanol.t is miscible (i.e., mixes without separation) with water in all proportions and is separated from water only with difficulty; ethanol that is completely free of water is called absolute ethanol.
Ethanol. Ethanol or ethyl alcohol is commonly called alcohol. Ethanol in its pure state is a colorless flammable liquid which is completely miscible with water.Ethanol is made from the fermentation of sugars from agricultural crops such as 1. barley used to make beer or 2. grapes used to make wine.he molecular formula for ethanol is C 2 H 6 O and its molar mass is 46.068 g/mol. Pure ethanol is used as solvent for esters, medicines, solvent based paints and perfumes. It is also used as a cleaning product (methylated spirits).