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Kruka [31]
3 years ago
7

An ionic bond would most likely form between atoms of which of these pairs? A. oxygen and oxygen B. magnesium and oxygen C. magn

esium and magnesium User: What is an ionic bond? A. the attraction positive ions have for free electrons B. the force that holds the valence electrons to the atom C. the attraction and bonding of ions with equal opposite charges D. the bonding of ions to the same element atoms of neutral charge
Chemistry
1 answer:
RoseWind [281]3 years ago
7 0
Qn1)B
qn2)C

This is because a nonmetal(oxygen) and a metal(magnesium) form ionic bond.
An ionic bond is strong electrostatic forces of attraction between positive and negative ions (opposite ions)

exp: Mg2+ + O2- ---> MgO
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expeople1 [14]

Answer:

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Explanation:

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2 years ago
The pKa of the α‑carboxyl group of serine is 2.21 , and the pKa of its α‑amino group is 9.15 . Calculate the average net charge
sleet_krkn [62]

Answer:

Net charge in serine at pH equal to 8.30 is "0"

Explanation:

  • At pH > pK_{a}, carboxyl group exists as -CO_{2}^{-} (charged)
  • At pH < pK_{a}, carboxyl group exists as -COOH (neutral)
  • At pH > pK_{a}, amino group exists as -NH_{2} (neutral)
  • At pH < pK_{a}, amino group exists as -NH_{3}^{+} (charged)
  • So, at pH = 8.30, both carboxyl and amino group exists in charged state.
  • Net charge in serine at pH equal to 8.30 is "0".
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3 years ago
Determine the number of protons and neutrons in an atom of Uranium - 238
Mila [183]

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146

Explanation:

uranium is 92 and the mass number of the isotope is given as a 238 therefore it is not the two protons 92 electrons and

real explanation Google it

7 0
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Use dimensional analysis to convert 14.5mi/hr to km/s
Liula [17]

Answer:

0.006 48 km/s

Explanation:

1. Convert miles to kilometres

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2. Convert hours to seconds

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3. Divide the distance by the time

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Not 100% sure if its right.

When an object covers equal distances in equal amounts of time, it is moving at a constant speed.

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