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Chemistry

2 answers:

PolarNik [594]3 years ago

5 0

How many valence electrons does hydrogen have after bonding? 2 valence electrons each

Hydrogen atom has 1 valence electron. Since Hydrogen can only fit a max of 2 valence electrons in its orbital, each Hydrogen atom only needs 1 electron. Each atom has 1 valence electron, so they can just share, giving each atom two electrons each.

How many valence electrons does oxygen have after bonding?

6 valence electrons

Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell. We can write the configuration of oxygen's valence electrons as 2s²2p⁴.

Marizza181 [45]3 years ago

4 0

Answer:6 valence electrons

and

one valence electron

Explanation:

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Which equation shows how to calculate how many grams (g) of KOH would be needed to fully react with 4 mol Mg(OH)2? The balanced

bazaltina [42]

Mole ratio:

MgCl₂ + 2 KOH = Mg(OH)₂ + 2 KCl

2 moles KOH ---------------- 1 mole Mg(OH)₂
moles KOH ------------------- 4 moles Mg(OH₂)

moles KOH = 4 x 2 / 1

= 8 moles of KOH

molar mass KOH = 56 g/mol

mass of KOH = n x mm

mass of KOH = 8 x 56

= 448 g of KOH

hope this helps!

3 0

3 years ago

Read 2 more answers

Once formed, how are coordinate covalent bonds different from other covalent bonds?

-Dominant- [34]

Answer:

$\boxed {\boxed {\sf {One \ atom \ donates \ both \ electrons \ in \ a \ pair}}}$

Explanation:

A covalent bond involves the sharing of electrons to make the atoms more stable, and so they satisfy the Octet Rule (8 valence electrons).

Typically each atom contributes an electron to form an electron pair. This is a single bond. There are also double bonds (two pairs of electrons), triple bonds (three pairs of electrons), and coordinate covalent bonds.

Sometimes, to satisfy the Octet Rule and achieve stability, one atom contributes both of the electrons in an electron pair. This is different from other covalent bonds because usually each of the 2 atoms contributes an electron to make a pair.

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3 years ago

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

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Physical weathering

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3 years ago

Find the total surface area of the rectangular prism in the figure. A) 174 cm^ 2 B) 522c * m ^ 2; 348c * m ^ 2 D) 432c * m ^ 2

WARRIOR [948]

Surface area: 348 m^2

8 0

2 years ago