Answer:
The correct answer is <em>b. Negative</em>
Explanation:
An electrolytic cell is based on a reduction- oxidation reaction which is non spontaneous. That means that the standard cell potencial (Eº) is negative. For this reason, an electrical potential must be applied in order to force the reaction. Conversely, a galvanic cell is based on a spontaneous redox reaction, so the galvanic cell produces electrical energy.
I believe the control group is what doesn't change in the experiment, and the experimental group is what is being tested / receives the treatment :)
Answer:
before the substance was a gas it was a liquid.
Explanation:
