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Oksi-84 [34.3K]
3 years ago
15

Which bond pair does not have a polar covalent bond? P – Cl O – H S – Cl H – Cl Cl – Cl

Chemistry
1 answer:
vesna_86 [32]3 years ago
5 0
So,

A polar covalent bond is a bond between two atoms that has a low electronegativity difference (usually 0.1 < x < 1.9, which is kind of the border between nonpolar covalent and ionic, respectively).  The most prominent example of a polar covalent bond is water, where the oxygen atom has an electronegativity of 3.5 and the hydrogen atoms have electronegativities of 2.1.  The electronegativity difference is 3.5-2.1 = 1.4, which is still in covalent territory, but still a polar bond.  This is why lowercase delta's appear beside oxygen atoms in drawings.

Examining, the four options, we immediately see that option D is Cl-Cl.  A bond between two of the same atoms inevitably implies an electronegativity difference of zero, which means a nonpolar covalent bond: electrons are equally shared.  Anywhere you see two identical atoms bonding (except for metals), you will have a nonpolar covalent bond.

The correct answer is D.


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If water is poured into extremely concentrated acid/bases, the rate of volatility and exothermic reaction is too rapid and might cause a chemical eruption, leading to acid burns.

Safety precautions hence dictate the reverse is practiced.

I believe this is a clear answer.

4 0
3 years ago
Write at least three characteristics of acids and three characteristics of bases. These characteristics should be what makes the
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3 0
3 years ago
2.
katovenus [111]

Answer:

A. 6atm

Explanation:

Using pressure law equation:

P1/T1 = P2/T2

Where;

P1 = initial pressure (atm)

T1 = initial temperature (K)

P2 = final pressure (atm)

T2 = final temperature (K)

According to this question;

P1 = 3 atm

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Using P1/T1 = P2/T2

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4 0
3 years ago
A 0.89% (w/v) sodium chloride solution is referred to as physiological saline solution because it has the same concentration of
maks197457 [2]
1) 0.89% m/v = 0.89 grams of NaCl / 100 ml of solution

=> 8.9 grams of NaCl in 1000 ml of solution = 8.9 grams of NaCl in 1 liter of solution

2) Molarity = M = number of moles of solute / liters of solution

=> calculate the number of moles of 8.9 grams of NaCl

3) molar mass of NaCl = 23.0 g /mol + 35.5 g/mol = 58.5 g / mol

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Answer: 0.152 M
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Answer:

These two numbers are fixed for an element. The mass number tells us the number the sum of nucleons of protons and neutrons in the nucleus of an atom. The atomic number also known as the proton number is the number of protons found in the nucleus of an atom. ... The atomic number uniquely identifies a chemical element.

Explanation:

8 0
3 years ago
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