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hoa [83]
3 years ago
15

An electron: (Select all that apply.)

Chemistry
2 answers:
n200080 [17]3 years ago
8 0
Has a negative charge and emits energy when it moves to a lower energy orbit from an excited state.

electrons are NOT found in the nucleus but are actually found in rings surrounding the nucleus called orbits.

And while protons and neutrons have reltively the same mass, electrons are about 2000 times lighter. 

Also: side note, when electrons move FROM a lower energy orbit INTO an excited state, it absorbs light.
Ira Lisetskai [31]3 years ago
8 0

Answer : The correct options are,

An electron has a negative charge.

An electron emits energy when it moves to a lower energy orbit from an excited state.

Explanation :

As we know that there are three subatomic particles which are proton, neutrons and electrons. The proton which are positively charged and the neutron that is neutral (no charge) both are present inside the nucleus and the electron which are negatively charged and it is present outside or around the nucleus.

As per given in the question,

An electron is a subatomic particle that has a negative charge and it emits energy when it moves to a lower energy state from an excited state.

Where as proton and electrons have different masses but same magnitude of charge with opposite charges.

The mass of proton  = 1.67\times 10^{-27}Kg

The mass of electron = 9.1\times 10^{-31}Kg

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Write a balanced half-reaction for the reduction of permanganate ion (Mno) to manganese ion Mn?) in acidic aqueous solution. Be
Luden [163]

Explanation:

Permanganate is general name for the chemical compound which containes manganate (VII) ion. Permanganate(VII) ion is strong oxidizing agent as  manganese is in +7 oxidation state and can be easily reduced and oxidize others.

The balanced half reaction for reduction of the permanganate ion, MnO_4^- to manganese ion, Mn^{2+} is shown below:

MnO_4^-_{(aq)}+8H^+_{(aq)}+5e^-\rightarrow Mn^{2+}_{(aq)}+4H_2O_{(l)}

6 0
3 years ago
Which particle has the same mass as a neutron?
Ilya [14]

Answer:

proton

Explanation:

neutron: A subatomic particle forming part of the nucleus of an atom. It has no charge. It is equal in mass to a proton or it weighs 1 amu.

5 0
3 years ago
Read 2 more answers
What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons? What is the atomic number of an atom that
Juli2301 [7.4K]

Answer: The atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons is 6.

Explanation:

Atomic number is defined as the number of protons or number of electrons that are present in an atom.

For a neutral atom:

Atomic number = Number of electrons = Number of protons

Given :  Number of electrons = Number of protons = 6

Thus atomic number = 6

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

Given: Number of neutrons = 6

Thus mass number = Number of protons + Number of neutrons = 6+ 6= 12.

The atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons is 6.

4 0
2 years ago
A certain chemical reaction releases 36.2 kJ/g of heat for each gram of reactant consumed. How can you calculate what mass of re
Lilit [14]

Answer:

0.038 g of reactant

Explanation:

Data given:

Heat release for each gram of reactant consumption = 36.2 kJ/g

mass of reactant that release 1360 J of heat = ?

Solution:

As  36.2 kJ of heat release per gram of reactant consumption so first we will convert KJ to J

As we know

1 KJ = 1000 J

So

36.2 kJ = 36.2 x 1000 = 36200 J

So it means that in chemical reaction 36200 J of heat release for each gram of reactant consumed so how much mass of reactant will be consumed if 1360 J heat will release

Apply unity formula

                 36200 J of heat release ≅ 1 gram of reactant

                 1360 J of heat release ≅ X gram of reactant

Do cross multiplication

              X gram of reactant = 1 g x 1360 J / 36200 J

              X gram of reactant = 0.038 g

So 0.038 g of reactant will produce 1360 J of heat.

5 0
3 years ago
What is silver?Hows it formed?Who created it?Make sure you include the year.At least 5 sentences for each.
mylen [45]
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3 0
3 years ago
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