2 years ago

Scandium 15. Write the nuclear symbol for an ion with a charge of +2,20 protons, and 24

1 answer:

8 0

If the element has a charge of +2 it has lost two electrons giving it an overall positive charge making it a cation. In order to find the number of electrons, take the elements atomic number and subtract two since it lost two electrons

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What is the maximum number of electrons in oxygen Adam can hold in its outer energy level

adell [148]

Do you mean atom :).

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Silver sulfate dissociates into silver ions and sulfate ions:

bagirrra123 [75]

Answer:

A its a step by step equation the answer is A

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Consider the cell pt | h2 (1 atm); h+ (? m) || hg2cl2(s); cl− (1 m) | hg 2 h+ + 2 e − → h2 e 0 = 0.00 v hg2cl2 + 2 e − → 2 hg +

Dmitry [639]

Answer:

1.39

Explanation:

[Hg2Cl2]= 1M

[H^+] = ????

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From Nernst Equation:

E= E°cell- 0.0592/n log [Red]/[Ox]

0.0268= 0.35- 0.0592/2 log 1/[Ox]^2

-0.082= -0.0296 log 1/[Ox]^2

log 1/[Ox]^2= 0.082/0.0296

log 1/[Ox]^2= 2.77

1/[Ox]^2=Antilog (2.77)

[Ox]^2=1.698×10^-3

[Ox] = 0.0412 M

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3 years ago

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Part iii. Is the dissolution reaction of ammonium nitrate enthalpy favored?

lesya [120]

Answer:

No, it is not enthalpy favored since the chemical system gains energy.

Explanation:

The dissolution of ammonium nitrate in water is an endothermic process.

Endothermic process requires the system to gain energy to can dissolve the particles in water.

So, the reaction is not enthalpy favored.

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3 years ago

(Digestion, Intestine, Bile)is secreted by the liver to help in the breaking down of food particles.

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Answer:

Bile

Explanation:

Bile is secreted by the liver to help in the breaking down of food particles.

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1 year ago