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madreJ [45]
3 years ago
9

How does an object become negatively charged?

Chemistry
2 answers:
neonofarm [45]3 years ago
4 0

It gains electrons. Electrons are negatively charged subatomic particles; so when an atom gains an electron it becomes net negative.

Paha777 [63]3 years ago
3 0

<u>Answer:</u> The correct answer is it gains electrons.

<u>Explanation:</u>

There are 3 subsatomic particles in an atom: Electrons, neutrons and protons.

Neutrons does not carry any charge on them. They are neutral particles.

Protons carry positive charge on them.

Electrons carry negative charge on them.

In an element, number of protons and electrons remains the same.

When an element looses electrons, the number of protons increases than electrons. Thus, the element will have a positive charge.

When an element gains electrons, the number of electrons is more than the number of protons. Thus, the element will have a negative charge.

Hence, the correct answer is it gains electrons.

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How many moles are in a mass of 800.0 g of magnesium?
qaws [65]

Answer:

32.92 moles of Mg

Explanation:

To convert grams to moles (Or vice versa) of any chemical compound we need to use the molar mass of the substance (That is, how many grams weighs 1 mole of the chemical).

The magnesium, Mg, has a molar mass of 24.305g/mol. That means in 800.0g of Mg you have:

800.0g * (1mol / 24.305g) =

<h3>32.92 moles of Mg</h3>
7 0
3 years ago
What is the oxidation number of nitrogen in the nitrate ion NO31−?
ahrayia [7]

In No3-1 the oxidation number of oxygen is -5 so oxidation number of N would be +5

8 0
3 years ago
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What is the quantity of atoms in KMnO4 ?
tankabanditka [31]

Answer:

Potassium permanganate has a molar mass of 158.04 g/mol. This figure is obtained by adding the individual molar masses of <em><u>four oxygen atoms</u></em>, <em><u>one manganese atom</u></em> and <em><u>one potassium atom</u></em>

Explanation:

6 0
2 years ago
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In the unbalanced equation given below, what is the element that is gaining electrons?
viktelen [127]

Hey there!:

HCl + MnO2 → MnCl2 + H2O + Cl2

* in HCl the oxidation state of Cl is -1 .

* on the product side the oxidation state is 0 .

* therefore Cl gains electrons .

* in  MnO2 the oxidation state of Mn is +4

* in MnCl2 the oxidation state of Mn is +2

Therefore Mn loses electrons

Answer A

Hope That helps!

4 0
3 years ago
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Which of the following is a nonrenewable energy source? O A. Solar B. Hydroelectric C. Natural gas D. Biomass
Alex

Answer:

C. natural gas

Explanation:

Solar comes from the sun, which if it became nonrenewable, we would be dead. hydroelectric comes from water and Dams, which water is reproduced through rain. Biomass are things like leaves, which are seasonally reproduced.

8 0
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