Express 345.6 in scientific notation

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

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.

When a septic tank backs up a goes in to clean it out