Aneutral atom of beryllium (be) has an average mass of 9 amu and 4 electrons. how many neutrons does it have? a. 13 b. 5 c. 9 d. 4

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

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 are the similarities between compounds and mixtures?