In a paper chromatography chamber, which of the following could be the mobile phase?

plastic plate
air
paper
alcohol

Here’s one way to follow the scientific method. place the missing steps in the correct position in the process

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

What is the empirical formula for c4h8o2