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Sergio [31]
2 years ago
8

Which of the following items represents a chemical change?

Chemistry
1 answer:
4vir4ik [10]2 years ago
7 0
Burning is a chemical reaction
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How many electron-containing orbitals are in an atom of arsenic? How many of these orbitals are completely filled? How many unpa
mariarad [96]

4

3

3

p-sublevel

Explanation:

Arsenic is an element on the fifth group on the periodic table. Other elements in the group are Nitrogen, Phosphorus, Antimony and Bismuth.

The electronic configuration of Arsenic is given as:

   

    1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³

It has an atomic number of 33:

Number of electron containing orbitals = 4

it has four energy levels. It also belongs to the fourth period on the periodic table.

How many of the orbitals are completely filled = 3

The inner orbitals are completely filled i.e the first 3 orbitals.

Number of unpaired electrons = 3

They can be found in the 4p³ sublevel.

Sublevel where unpaired electrons are located  = p-sublevel

learn more:

Orbitals brainly.com/question/1832385

#learnwithBrainly

8 0
4 years ago
How could two objects have the same temperature but different thermal energies? One object could have more particles and greater
Tju [1.3M]

Answer:

One object could have more particles and greater total kinetic energy

Explanation:

The higher the temperature the more the particles. So, when we have high temperature, there is more particles interacting.

Temperature can simply be defined or gotten by taking the average of of the kinetic energy of the particles in the object that is the keywords here are TAKING THE AVERAGE KINETIC ENERGY

Thermal energy is the energy that can be gotten from adding up all the total kinetic energy of the particles in the object. So, the keywords here are; ADDING UP THE TOTAL KINETIC ENERGIES.

So, when two particles of the same temperature have the different thermal energy it means that One object could have more particles and thus having greater total kinetic energy.

6 0
3 years ago
What factors determine an objects kinetic energy
ludmilkaskok [199]
According to the formula of KE.

KE = 1/2m • v^2.

Both of the variables of mass and energy m determines an object's kinetic energy. Assuming the mass of an object is held constant, the change in velocity, or velocity change will dictate the amount of kinetic energy that a particular object posses.
6 0
3 years ago
Read 2 more answers
What best describes the battery in this picture? an electrolytic cell that has spontaneous half reactions
nasty-shy [4]

ok im not full sure man but i would say multiple voltaic cells that have spontaneous half reactions


     



                                          im sorry hope it helps

5 0
4 years ago
Read 2 more answers
Which of the following statements is true?
Fittoniya [83]

Answer:

Es la tercera por qué cuando el material varía va cambiando de estado

Explanation:

8 0
2 years ago
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