According to the Federal Reserve Bureau, the average cost of an annual premium for homeowners insurance is between $300 and $1,000.For most homeowners, the annual costs for a homeowners insurance policy can be estimated by dividing the value of the home by 1,000, then multiplying the result by $3.50.ccording to the Federal Reserve Bureau, the average cost of an annual premium for homeowners insurance is between $300 and $1,000.
Types of structural isomerism Chain isomerism These isomers arise because of the possibility of branching in carbon chains. For example, there are two isomers of butane, C4H10. In one of them, the carbon atoms lie in a straight chain whereas in the other the chain is branched.
Isomers. Pentane is one of three structural isomers with the molecular formula C5H12, the others being isopentane and neopentane.The branched isomers are more stable than pentane, which means that they have lower heat of formation and heat of combustion.sopentane is more stable than pentane by 1.8 kcal/mol, and neopentane by 5 kcal/mol. A related cycloalkane is cyclopentane, although this is not an isomer of pentane as its molecular formula is different, cyclopentane is an isomer of the pentenes.