The answer is C 5m. Thanks
F. <em>None of the above
</em>
<em>No O atoms are present</em> as reacting substances, only O_2 and H_2O molecules.
O_2 + 2H_2O + 2e^(-) → 4OH^(-)
We must use <em>oxidation numbers</em> to decide whether oxygen or water is the substance reduced.
The oxidation number of O changes from 0 in O_2 to -2 in OH^(-).
A decrease in oxidation number is <em>reduction</em>, so O_2 is the substance reduced.
The oxidation number of O is -2 in both H_2O and OH^(-), so water is <em>neither oxidized nor reduced</em>.
Answer:
The pH of an acid is lower than a neutral solution.
Explanation:
A neutral solution is 7.0 and anything below a 7.0 is considered acidic.
Answer:
Find the element,
Explanation:
Finding the element will tell you how many protons there are. For example, if you are given an atom of oxygen, you can figure out the number of protons by looking it up on a periodic table, which gives you 8.
If an atom is neutral, find the number of electrons. This number will also be the number of protons.
Answer:
heat flows from the object that has more thermal more energy to the object with less thermal energy