Which formula shows a sandwich with two slices of rye bread (r) and one slice of turkey (t)? rt r2t r2t2 rt2

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?