If the chemist mistakenly makes 225 mL of
solution instead of the 200 ml, what mo-
lar concentration of sodium nitrate will the
chemist have actually prepared?
Answer in units of M.

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

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 ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?