Answer:
- <u>option </u><u><em>B. Lose 1.</em></u>
Explanation:
To determine the number of<em> electrons that a single hydrogen gains or loses </em>you need to realize that the chemical reaction is an oxidation-reduction (redox) reaction and state the changes in the oxidation states.
The substance that gains electrons is being reduced, reducing its oxidation number, and the substance that lose electrons is being oxidized, increasing its oxidation state.
<u>1) State the oxidation state of hydrogen atoms in the rectant side:</u>
- H₂: the oxidation state of any element in its atomic or molecular form is zero. That is indicated as a superscript to the right of the chemical symbol: H₂⁰
<u>2) State the oxidation state of the hydrogen atoms in the product side:</u>
- H₂O: the rule says that the oxidation state of oxygen, when combined with other elements, except in the case of peroxides, is -2.
Hence, in order to the molecule H₂O be neutral, the total charge contributed by the two atoms of hydrogen must be + 2: +2 - 2 = 0.
Since there are two hydrogen atoms, each contributes +2 / 2 = +1 charge.
<u>3) Conclusion:</u>
Every atom of hydrogen changes from a 0 oxidation number to a +1 oxidation number, which, in turn, means that every hydrogen atom loses one electron.
Thus, the answer is, the option <em>B. Lose 1.</em>
Answer:
The quantity of radioactive nuclei at any given time will decrease to half as much in one half-life.
Explanation:
I believe the answer is gamma ray.
Answer:
B) conducts electricity
Explanation:
This answer can be answered by the process of elimination. Metals are excellent conductors of electricity, which means A is out, and metals are also known to have medium reactivity and have high melting points, meaning C and D are also out.
Au/Cr cell will run as a voltaic cell and Co/Zn cell will run as an electrolytic cell.
<h3>What is an electrolytic cell?</h3>
An electrolytic cell that uses electrical energy to enable a non-spontaneous redox reaction is known as an electrolytic cell.
Certain chemicals can be electrolyzed using electrolytic cells, which are electrochemical cells.
For example, water can be electrolyzed to create gaseous oxygen and gaseous hydrogen with the use of an electrolytic cell.
The following are the three essential parts of electrolytic cells:
Cathode (which is negatively charged for electrolytic cells)
Anode (which is positively charged for electrolytic cells)
Electrolyte
The reactions for each half cell is given by
; E° = 1.50 V
; E° = –0.74 V
; E° = –0.28 V
; E° = –0.76 V
When the Au/Cr cell will run as a voltaic cell and Co/Zn cell will run as an electrolytic cell, the a difference in the voltages is produced
= 2.24 V – 0.48 V = 1.76 V
Learn more about electrolytic cell:
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