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Contact [7]
3 years ago
5

A magnesium ion, Mg2+, is formed from a magnesium atom, Mg.

Chemistry
1 answer:
konstantin123 [22]3 years ago
5 0

Answer:

The correct row is B.

Explanation:

The formation of the magnesium ion, Mg²⁺, comes from the removal of 2 electrons from the valence shell of the magnesium atom.<em> </em>Since the remotion is of electrons, the nucleus of the atom remains the same, so the number of protons and the number of neutrons does not change.<em> </em>

If the number of proton change, then the atom also change, since the identity of an atom is related to the atomic number which is the same to the proton number.          

Now, if the number of neutrons changes, then we would be in the presence of an isotope of the magnesium atom.        

Therefore, the correct row is B.  

I hope it helps you!                            

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Scientist can use the of minerals to tell them apart A.sound B.length C.size D.color
ipn [44]

Answer:

color

Explanation:

Scientists can use the color of minerals to tell them apart.

7 0
4 years ago
I have my chemistry EOC tomorrow, and I need to know how to calculate the molar mass of a compound. Specifically ones set up lik
yuradex [85]

Answer:

357.475

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6 0
3 years ago
Consider four different samples: aqueous LiBr , molten LiBr , aqueous AgBr , and molten AgBr . Current run through each sample p
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Answer:

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b) Aqueous AgBr = solid Ag

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c) Molten AgBr = Solid Ag

Explanation:

a) Aqueous LiBr

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b) Aqueous AgBr

This sample produces Solid Ag, because the Ag+ has a reduction potential higher than the H+ from the water. Therefore the silver cation will reduce instead of the hydrogen one and form the solid.

c) Molten LiBr

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c) Molten AgBr

The same as the item above: there is only one cation present in the cathod. In this case the Ag+, so it will reduce and form solid Ag.  

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3 years ago
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SCORPION-xisa [38]

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Explanation:

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