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ivann1987 [24]
3 years ago
15

The table shows five items that a person may consider including in a safety contract.

Chemistry
1 answer:
zhenek [66]3 years ago
5 0

Answer:

1,2, and 5

Explanation:

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An electrochemical cell has the following standard cell notation: Al(s) | Al3+(aq) || Mg2+(aq) | Mg(s)
Soloha48 [4]

Answer:

a. Al(s) ⇄ Al⁺³(aq) + 3e⁻ (oxidation)

Mg²⁺(aq) + 2e⁻ ⇄ Mg(s) (reduction)

b. ΔE° = + 0.715 V

c.  It's an electrolytic cell, because it's a nonspontaneous reaction.

d. 2Al(s) + 3Mg²⁺(aq) ⇄ 2Al⁺³(aq) + 3Mg(s)

Explanation:

a. By the notation given, first is represented the oxidation reaction and then the reduction reaction, so they are:

Al(s) ⇄ Al⁺³(aq) + 3e⁻ (oxidation)

Mg²⁺(aq) + 2e⁻ ⇄ Mg(s) (reduction)

b. The standard potential of the cell (ΔE°) is the reduction potential of the oxidation less the reduction potential of the reduction. The reduction potentials are:

Al(s) = -1.66 V

Mg(s) = -2.375 V

ΔE° = -1.66 - (-2.375)

ΔE° = + 0.715 V

c. It's an electrolytic cell.

A galvanic cell is spontaneous, so the cathode (reduction) has a higher E° than the cathode (oxidation). In this case, the oxidation reaction has a higher E°, so the reaction is nonspontaneous and it's necessary an external force to it happen, so it's an electrolytic cell.

d. 2Al(s) + 3Mg²⁺(aq) ⇄ 2Al⁺³(aq) + 3Mg(s)

The number of electrons must be the same, so the oxidation reaction is multiplied by 2, and the reduction reaction by 3.

5 0
3 years ago
According to the kinetic theory of motion everything is made of particles and all particles are?
melisa1 [442]
All particles are in motion.
5 0
3 years ago
When one of the atoms involved in a covalent bond has a much higher electronegativity than the other atom, what type of bond res
ICE Princess25 [194]
If electronegativity difference between atoms is much higher then they form ionic bond.

Hope this helps!
5 0
3 years ago
Does anyone know this one???
iren2701 [21]

Answer:

peep peep bonst stonst with a pormp pomp po beeet teet teetily

Explanation:

corncobpipe accident

7 0
3 years ago
An atom of aluminum has 13 protons and 14 neutrons. what is the atomic mass
PtichkaEL [24]
A=P +N
A=13+14
A=27 this the answer
5 0
3 years ago
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