The answer is D. Stars are formed from interstellar clouds because of the Law of Universal Gravitation. The interstellar clouds are termed as nebula. When other stars dies a supernova occurs then the gravity from this pushes matter into the clouds until it cannot overcome the gravitational pull and it collapses which heats matter up forming a star.
Answer:
they leads to water full of village
That would be the element aluminum.
Answer:
its an animal that preys on others
Explanation:
Answer:
- <em><u>2I ⁻ → I₂ + 2e⁻</u></em> describes the <em><u>oxidation.</u></em>
- <u><em>Cl₂ + 2e⁻ → 2Cl ⁻</em></u> describes the <u><em>reduction</em></u>.
Explanation:
<em>Oxidation-reduction reaction</em> is the simulaneous oxidation and reduction of the substances and is represented by two half-reactions.
The <em>oxidation</em> half-reaction is the loss of electrons, with the consequent increase in the oxidation state by the oxidized substance.
In this case, the process that shows the loss of electrons is:
That reaction shows:
- Two I⁻ ions lose two electrons (one each) to be oxidized to I₂.
- The change in the oxidation number is from -1 to 0.
- Hence this half-reaction is the oxidation reaction.
On the other hand, the <em>reduction</em> half-reaction is the gain of electrons, with the consequent reduction of the oxidation state by the reduced substance.
In this case, the process that shows the gain of electrons is:
That reaction shows:
- Two Cl atoms gain two electrons (one each) to be reduced to Cl⁻.
- The change in the oxidation number is from 0 to - 1.
- Hence, this half-reaction is the reduction reaction.
<u>Summary:</u>
- <em>2I ⁻ → I₂</em> + 2e⁻ describes the oxidation.
- <em>Cl₂ + 2e⁻ → 2Cl ⁻</em> describes the reduction.
