Study this image. Which statement best describes the rock shown?

The grains of this rock are jagged.
The grains in this rock are tiny.
This rock has a non-banded pattern.
The color of this rock is determined by its texture.

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