Which of these is a good reason to use natural gas instead of another fossil fuel? a. it is considered safe to use in homes b. equipment failure can lead to major spills c. extraction through fracking can contaminate groundwater d. when used, it releases chemicals that caused acid rain

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers