A stain is made up of a molecule that does not have charged regions. What soap/ solvent combination should I use and why?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

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.