We had a quiz the other day and I wasn't prepared for everything on it! I read over the chapter, but I think watching videos over the materials helps a lot more. Some of the questions I did the work and got the answer, but I would do something silly, like subtract my answers and pick the wrong one. Hopefully for the test I don't make silly mistakes, because at this point, every point counts.
crash course
the greatest song you will ever hear
mole ratio practice
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