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malfutka [58]
3 years ago
15

When NaCl dissolves in water, aqueous Na+ and Cl- ions result. The force of attraction that exists between Na+ and H2O is called

a(n) ________ interaction.
Chemistry
1 answer:
Gnoma [55]3 years ago
7 0

Explanation:

Polarity is defined as the development of partial charges on the atoms of a molecule. In a water molecule, there are hydrogen and oxygen atoms.

Due to the difference in electronegativity of both hydrogen and oxygen atom there is development of partial positive charge on hydrogen atom and a partial negative charge on oxygen atom.

Dipole-dipole interactions are defined as the interactions that occur when partial positive charge on an atom is attracted by partial negative charge on another atom.

So, when Na^{+} is attracted towards H_{2}O then this attraction is due to dipole-dipole interaction taking place between the sodium ion and water molecules.

Thus, we can conclude that when NaCl dissolves in water, aqueous Na^{+} and Cl^{-} ions result. The force of attraction that exists between Na^{+} and H_{2}O is called a dipole-dipole interaction.

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ivanzaharov [21]
In order to <span>complete and balance the following reactions, you should add a Fe into it. So it will look like  uo2+ +cr o^2- 7 ـــــــــــــــــــــ uo2+ +cr3+Fe. The answer to the following given statement or missing answer is Fe. </span>
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4 years ago
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Give an example of two elements that would form a covalent bond
Tamiku [17]

<span>Hydrogen carbon and oxygen commonly form covalent bonds.
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3 years ago
What is the poH of a 3.67 x 10-5 M OH solution and is it acidic, basic, or neutral?
Anni [7]

Answer:

The pOH is  4, 44 and the solution is basic.

Explanation:

The pOH is a measure of the concentration of OH (hydroxyl) ions in the solution.

The pOH is calculated as :

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The p0H scale ranges from values of 0 to 14 (less than 7.0 is basic and greater than 7.0 is acidic, a pH = 7.0 is neutral)

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3 years ago
one parsec equals 3.26 light years, where a light year is the distance light travels in one year. if the speed of light is 18600
Tpy6a [65]
Parsec is a unit of distance (as stated 1 Parsec = 3.26 light years, wihch is 3.26 times the distance run by light in one year).

That distance is:

1 parsec = 3.26 mi× 186,000 mi/s × 3600 s/h × 24 h/day × 365 day/ year × 1 year = 19,122,168,960,000.mi.

So, the question of <span>how many parsecs it takes for light to reach Mars from Earth does not make sense because parsecs is not a unit of time.
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</span><span>You can calculate how many parsecs is equivalent to the distance between Mars and Earth, 60,000,000 km. For this you can first calculate the  equivalence of which you do in this way:
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7 0
3 years ago
The proton number of barium (Ba) is 56. It is in Group II of the periidic table how many electrons would you expect a barium ato
ella [17]

Answer:

A barium atom would be expected to contain 2 electrons in its outer energy level.

Explanation:

The columns of the periodic table are called groups. There are eighteen groups, numbered from 1 to 18.

The elements of each group have the same number of electrons in their last atomic shell, which is why they have similar chemical properties, because the chemical properties of chemical elements are strongly related to the electrons located in the last atomic shell.

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<u><em>A barium atom would be expected to contain 2 electrons in its outer energy level.</em></u>

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