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Rzqust [24]
3 years ago
5

Select the correct answer.

Chemistry
2 answers:
Svetlanka [38]3 years ago
6 0

C. A positive calcium ion and a negative oxygen ion

Mariulka [41]3 years ago
5 0

Answer:

C. a positive calcium ion and a negative oxygen ion

Explanation:

Ionic bonds are generally positive and negative because one is gaining electrons while the other is losing.

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What term is used when heat is transferred from one piece of matter to another until they are of equal temperature?​
IgorC [24]

thermal contact

When heat flows from one object or substance to another it is in contact with, the objects or substances are said to be in thermal contact. The state where objects in thermal contact with each other reach the same temperature, no heat flows between them.

8 0
2 years ago
Write the balanced COMPLETE ionic equation for the reaction when aqueous NiCl₂ and aqueous Na₂S are mixed in solution to form so
Reptile [31]

Answer:

Explanation:

The chemical reaction of the well-balanced equation is as follows:

\mathbf{2NiCl_{2(aq)}+2Na_2S_{(aq)} \to 4NaCl_{(aq)}+2NiS_{s}}

The aforementioned reaction's ionic equation is:

\mathbf{2Ni^{2+}_{(aq)}+4Cl^-_{(aq)}+ 4Na^+_{(aq)}+2S^{2-}_{(aq)} \to 4Na^+_{(aq)}+4Cl^-_{(aq)}+2NiS_{(s)}}

From above; Na⁺ and Cl⁻ appear on both sides;

Hence, the net ionic equation is:

\mathbf{2Ni^{2+}_{(aq)}+2S^{2-}_{(aq)} \to 2NiS_{(s)}}

3 0
3 years ago
Rank the following atoms according to decreasing first ionization energy. (i.e. 1 = highest and 4 = lowest)
tatuchka [14]

The decreasing order of ionization energy will be Mg >Al >P>K.

Ionization energy sometimes referred to as ionization potential, would be the amount of energy it takes to eliminate an electron from a single, isolated atom or molecule.

On moving top to bottom in the periodic table, ionization energy will decrease rapidly.

Al =13 (group 3)

P =15 (group 5)

Mg =12 (group 2)

K =19 (group 1)

The decreasing order of ionization energy will be Mg >Al >P>K.

To know more about ionization energy.

brainly.com/question/18987798

#SPJ1

8 0
1 year ago
Which item below is NOT an example of how the general rule for dissolving works?
Westkost [7]

Answer:

there are no mutiple choices

5 0
3 years ago
The amount of heat in a substance depends on the _____ of the<br> molecules.
Dimas [21]
The correct answer that would best complete the given statement above is the term MOTION. The amount of heat in a substance depends on the motion of the molecules. Since the temperature is defined as the measure ofthe average kinetic energy of molecules. The higher the temperature, the faster the motion of the molecules would be. Hope this answer helps.
5 0
3 years ago
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