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3 years ago

What is the charge of a magnesium ion?

Chemistry

2 answers:

kupik [55]3 years ago

7 0

2+ charge electrons of course

Leokris [45]3 years ago

7 0

Answer:

Magnesium will remain positively charged +2 → Mg⁺²

Explanation:

The octet rule states that the atoms of the elements bind each other in the attempt to complete their valence shell with eight electrons. That is to say, the atoms will tend to yield or share electrons to complete eight electrons in the valence layer through an ionic, covalent or metallic bond.

In other words, the objective is to have the closest noble gas electronic configuration, thus having the last complete electron layer and acquiring stability.

This defines the electronic tendencies of each atom, being able to yield (and we call these cations) or tendency to accept (and we call them anions).

In the case of Mg, this element is closer to Ne (Neon) and will tend to lose the last two electrons and thus, its electronic configuration would be the same. In this way, since electrons are negative, Magnesium, by transferring its electrons, will remain positively charged +2 → Mg⁺²

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No links please. How many moles of methane (CH4) are in 7.31x10^25 molecules?

ad-work [718]

Answer:

molar mass of methane CH4

= C + 4 H

= 12.0 + 4 x 1.008

= 12.0 + 4.032

= 16.042g/mol

7.31 x 10^25 molecules x 1 mole CH4 = 121.43 moles

6.02 x 10^23 CH4 molecules

121.43 moles CH4 are present.

Explanation:

not to certain if this is right or not.. but hope it helps!

4 0

2 years ago

3. If the percent by volume is 2.0% and the volume of solution is 250 mL, what is the volume of solute in solution? (1 point) 0.

igor_vitrenko [27]

Volume percent = Volume of solute
----------------------------------
Volume of the solution

   2 Volume of the solute
------- =   ------------------------------
100 250

Volume of the solute = 2 x 250
------------
100

= 5 mL.

Hope this helps!

4 0

2 years ago

what is the concentration in ppm of a solution which is prepared by dissolving in 15mg of nacl in 200ml water

bezimeni [28]

Answer:

Explanation:

In weight/volume (w/v) terms,

1 ppm = 1g m-3 = 1 mg L-1 = 1 μg mL-1

200 mL = 0.2 L

15 / 0.2 mg L-1 =75 ppm

6 0

3 years ago

Does anybody know which element from the periodic table that has 19 electrons and 24 neutrons, for atomic charge.

jeka57 [31]

It Potassium my anime friend

6 0

3 years ago

Question 2: Naming Hydrocarbons

oksian1 [2.3K]

Answer:

1) 1-Pentyne

2) But-2-yne

3) Ethyne

4) 1-Propyne

5) 1-Butyne

6) Pent-2-yne

Explanation:

1) The number of carbon on the longest chain = 5, (two carbon atoms between the triple bond) therefore the prefix is pen-

The functional group is the triple bond on the first carbon with the suffix -yne

The name of the compound is 1-Pentyne

2) There are 4 carbon atoms on the longest chain, therefore, the prefix is but-

The location of the triple bond functional group (suffix; -yne) is on the second carbon atom

Therefore, the name of the compound is But-2-yne

3) The triple bond functional group is between the only two carbon atoms, therefore, the name is Ethyne

4) The number of carbon atoms = 3, with a prefix prop-, and the functional group on the first carbon atom on the longest chain is the triple bond, with suffix -yne

Therefore, the name of the compound is 1-Propyne

5) The number of carbon atoms on the longest chain = 4, the prefix is but-

The location of the triple bond functional group (suffix -yne) is on the first carbon atom

Therefore, the name is 1-Butyne

6) The number of carbon atoms on the longest chain = 5, the prefix of the compound is pen-

The location of the triple bond functional group (suffix; -yne) is on the second carbon atom, therefore;

The name of the compound is Pent-2-yne

4 0

3 years ago