How many grams are needed to prepare 200.0 ml of a.150 m solution of each amino acid in?

What is important to study for nios grade 12 chemistry? i have only one month left.

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space