whats the names of these structures? OHThe IUPAC name of the alcohol is: Name the compound using the 1993 IUPAC convention.OH

Since you have posted the multiple questions, we will solve the first question for you. If you want any specific question to be solved then please specify the question or post only that question. A systematic name is given to an organic compound by IUPAC nomenclature. The set of rules which are used to name any compound are: Select the longest carbon chain containing the functional group or the unsaturated bond. This chain is known as parent chain. Identify all the substituents which are attached to the parent chain. These form the side chains. Number the carbon atoms of the parent chain such that each of the substituent gets the lowest possible number. When two or more side chains have same positions than the lower number is assigned according to the lowest sum rule. The positions numbers are added to get the lowest possible sum. When two functional groups are present than priority order is considered. The group which is present at the top forms the suffix and bottom group is taken as the prefix. When the same type of substituent is present more than one in number, the prefixes di-, tri-, tetra-, penta- are used. When more than one substituent is present, the names of these substituents are written in the alphabetical order. Commas are used in between numbers and dashes are used in between the letters and numbers. There is no space in writing the name of a compound. In general, the names of substituents are written in alphabetical order followed by the base name of the parent chain.The given hydrocarbon is an organic compound which contains nine carbons atoms in the longest chain. So, the base name of the compound is nonane. Number is assigned to each of the carbon atom such that the substituent and functional group gets the lowest number. Here, the OH is given more priority and is given the lower number. There is only one functional group which is a hydroxyl group (OH). At the third position of the chain, one hydroxyl group is present. So, the name of the compound becomes nonan-3-ol. At the sixth position of the chain one propyl group is present. So, the prefix 6-propyl is used. On the eighth position, one methyl group is present. So, the prefix 8-methyl is used. Therefore, the name of the compound is 8-methyl-6-propylnonan-3-ol.