Answer:
D. a nonpolar covalent bond
I believe that carbonic acid breaks down into carbon dioxide and water when under decomposition.
The answer should be CO2 and H2O
Formula M1V1 =M2V2
1.5 * 100 = M2 *300
M2 = 1.5*100/300= 0.5.
Answer: the molarity is 0.5M.