1. what is the major source of hydrocarbons?
2. what type of chemical reactions do alkenes undergo?
3. draw the product of this alkene reaction with bromine:
ch3
ch3-c=ch2 + br2 —
4. circle the best (most accurate) representation of benzene and explain your reda
benzene and explain your reasoning.

i believe the answer is three water molecules

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.