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Marat540 [252]
4 years ago
9

How do the particles in matter change when a substance becomes hotter, cools down, or changes state

Chemistry
1 answer:
Archy [21]4 years ago
7 0
Colder- moves slower
warmer- moves faster
changes state:
    solid to gas- warmer
    gas to solid- colder
    something like that
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Write electron configurations for the following ion: Cd2 Cd2 . Express your answer in order of increasing orbital energy. For ex
Mashutka [201]

Answer:

Cd2+ : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 or [Kr] 4d¹⁰

Explanation:

Before proceeding to write out the electron configuration of Cd2+, we have to obtain the electron configuration of Cadmium (Cd),

Cadmium has an atomic number of 48, this means that a neutral cadmium atom will have a total of  48  electrons surrounding its nucleus.

The electronic configuration of Cadmium is;

Cd: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10

The shorthand notation is given as;

Cd: [Kr] 4d¹⁰5s²

Cd2+ means that it has two less electrons, hence it's electron configuration is given as;

Cd2+ : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 or [Kr] 4d¹⁰

5 0
3 years ago
Select the correct answer from each drop-down menu. carbon is found in all living organisms. the constant flow of carbon on eart
Nady [450]

The continuous cycling of carbon in the earyh is known as the carbon cycle.

<h3>What is the carbon cycle?</h3>

The carbon cycle is a cycle which explains the various processes by which carbon is recycled between the atmosphere and the earth.

The constant flow of carbon on earth through organisms and the air is known as the carbon cycle. Plants absorb carbon from the atmosphere in the form of carbon dioxide. They use it for respiration and food production.

Animals consume plants, transferring carbon along the food chain.

Plants and animals respire and release carbon into air. When the animals and plants die, they are eaten by decomposers.

Carbon enters back into the atmosphere in the form of carbondio dioxide.

Therefore, the continuous cycling of carbon in the earth is known as the carbon cycle.

Learn more about carbon cycle at: brainly.com/question/25845923

#SPJ4

5 0
2 years ago
If all three metals were exposed to extremely high temperatures, which would be the last to melt? (copper, gold, mercury)
Harlamova29_29 [7]

Answer:

I believe its Gold

Explanation:

5 0
3 years ago
Read 2 more answers
60 POINTS
Juli2301 [7.4K]

Answer:

PBr3 - Molecule , Polar

N2H2 - Molecule , (Polar in E- form and Non- polar in Z form)

C2H2 - Molecule , Non- Polar

N2 - Molecule , Polar

NCl3 - Molecule , Polar

SiF4 - Molecule , Non- Polar

NH3 - Molecule , Polar

F - Not- Molecule (atom)

H2 - Molecule and Non- Polar

Explanation:

Molecule : these are group of two or more atoms joined by strong force of attraction.

H2  is non- polar because it is homoatomic molecule.(made up of same element)

N2 is non- polar because it is homoatomic molecule.

5 0
3 years ago
Please help me balance this equation!!!!<br> _KOH + _HBr → -KBr + _H2O
Naddika [18.5K]

Answer: KOH + HBr = H2O + KBr

Explanation: hope this helps

8 0
3 years ago
Read 2 more answers
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