Which prefix is used to indicate that the main chain of a hydrocarbon contains four carbon atoms?

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude