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lapo4ka [179]
2 years ago
8

Argon has a completely filled p sublevel, giving it chemical stability. Potassium has one electron in the 4s sublevel and can ea

sily lose this electron, so it has a Argon has a completely filled p sublevel, giving it chemical stability. Potassium has one electron in the 4 s sublevel and can easily lose this electron, so it has a blank first ionization energy. Therefore, it blank the 4 s electron to achieve an blank electron configuration, giving it the added stability of the filled p sublevel. first ionization energy. Therefore, it Argon has a completely filled p sublevel, giving it chemical stability. Potassium has one electron in the 4 s sublevel and can easily lose this electron, so it has a blank first ionization energy. Therefore, it blank the 4 s electron to achieve an blank electron configuration, giving it the added stability of the filled p sublevel. the 4s electron to achieve an Argon has a completely filled p sublevel, giving it chemical stability. Potassium has one electron in the 4 s sublevel and can easily lose this electron, so it has a blank first ionization energy. Therefore, it blank the 4 s electron to achieve an blank electron configuration, giving it the added stability of the filled p sublevel. electron configuration, giving it the added stability of the filled p sublevel.
Chemistry
1 answer:
Stels [109]2 years ago
6 0

Potassium has one electron in the 4 s sublevel and can easily lose this electron, so it has a low first ionization energy.

Therefore, it lose the 4 s electron to achieve an Argon electron configuration, giving it the added stability of the filled p sublevel.

The ionization energy (Ei) is the minimum amount of energy required to remove the valence electron, when element lose electrons, oxidation number of element grows (oxidation process).

Potassium has lowe first ionization energy, so potassium easier remove one valence electron (4s¹).

Electron configuration of potassium is: ₁₉K 1s²2s²2p⁶3s²3p⁶4s¹.

Electron configuration of argon atom: ₁₈Ar 1s² 2s² 2p⁶ 3s² 3p⁶.

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7 0
2 years ago
Some fats are called "saturated" fats because __________. Select one: a. their carbon skeleton is bent to form four fused rings
marin [14]

Answer:

All carbons in the carbon skeleton contain the maximum number of hydrogen atoms

Explanation:

Saturated fats are class of compounds having all the fatty acids containing only single bonds. In other words, carbon skeleton has only single bonds.

Unsaturated compounds undergoes hydrogenation to form saturated fats.

In hydrogenation, hydrogen atoms are added to the carbon attached to double bond. After become saturated, no more hydrogen atoms can be added.

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6 0
2 years ago
A 1.67-g sample of solid silver reacted in excess chlorine gas to give a2.21-g sample of pure solid Agcl.The heat given off in t
kotegsom [21]

<u>Given:</u>

Mass of Ag = 1.67 g

Mass of Cl = 2.21 g

Heat evolved = 1.96 kJ

<u>To determine:</u>

The enthalpy of formation of AgCl(s)

<u>Explanation:</u>

The reaction is:

2Ag(s) + Cl2(g) → 2AgCl(s)

Calculate the moles of Ag and Cl from the given masses

Atomic mass of Ag = 108 g/mol

# moles of Ag = 1.67/108 = 0.0155 moles

Atomic mass of Cl = 35 g/mol

# moles of Cl = 2.21/35 = 0.0631 moles

Since moles of Ag << moles of Cl, silver is the limiting reagent.

Based on reaction stoichiometry: # moles of AgCl formed = 0.0155 moles

Enthalpy of formation of AgCl = 1.96 kJ/0.0155 moles = 126.5 kJ/mol

Ans: Formation enthalpy = 126.5 kJ/mol


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2 years ago
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Answer:

Reeling is the only process not listed.

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2 years ago
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Phosphoric acid has a pka of 2.1. at what ph will 75% of phosphoric acid be in the conjugate base form?
Colt1911 [192]

Answer:

pH is 2.58

Explanation:

The pH of the buffer made from the mixture of phosphoric acid (H₃PO₄) and its conjugate base form (H₂PO₄⁻) follows the Henderson-Hasselbalch equation:

pH = pka + log [H₂PO₄⁻] /[H₃PO₄]

If 75% of the buffer is in the conjugate base form (H₂PO₄⁻), 25% will be as H₃PO₄. Replacing to find pH:

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pH = 2.58

<em>pH is 2.58</em>

<em></em>

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2 years ago
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