These girl names were at the top of their popularity during 1970-1979 (usage of 0.322%) and have become much less widespread since (usage 0.14%, down 56.5%), with the form Jolene becoming less fashionable. Shown below is an analysis of the popularity of the girl name Jolena and affiliated names.hese girl names were at the top of their popularity during 1970-1979 (usage of 0.322%) and have become much less widespread since (usage 0.14%, down 56.5%), with the form Jolene becoming less fashionable. Shown below is an analysis of the popularity of the girl name Jolena and affiliated names.
Groups further define the hazard in Class I and Class II areas. In Class I, there are Group A (Acetylene and similar gases), Group B (Hydrogen and similar gases), Group C (Ethylene and similar gases) and Group D (Propane and similar gases). Hazardous dusts and fibers (Class II & III respectively) are not treated in Article 505.
What is the iupac name of alkyne with formula c2h2? Ethyne is the proper Iupac name for C2H2 which is more commonly known as acetylene. Eth is from the prefix for the two carbon system and yne is the suffix for a hydrocarbon thâ¦at contains at least one carbon to carbon triple bond. Making the world better, one answer at a time.