Print this map. 1  Name: St Lucia. (long form) Saint Lucia. 2  Capital City: Castries (61,341 pop.) 3  St Lucia Population: 162,781 (2013 est.) 4  World Populations (all countries)  Currency: East Caribbean Dollar (XCD) (conversion 1  rates) Ethnicity: Black 82.5%, Mixed 11.9%, East Indian 2.4%, other or unspecified 3.1% (2001 census)
Replacing one of the hydrogen atoms with a chain of one carbon atom and three hydrogen atoms produces methyl alcohol. The formula is CH4O. To get ethyl alcohol, one of the hydrogen atoms on the carbon chain that produced methyl alcohol is replaced by another carbon chain. The formula for this alcohol is C2H6O.
For example, water is always composed of a 2:1 ratio of hydrogen to oxygen atoms, and ethyl alcohol or ethanol is always composed of carbon, hydrogen, and oxygen in a 2:6:1 ratio. However, this does not determine the kind of molecule uniquely â dimethyl ether has the same ratios as ethanol, for instance.