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makvit [3.9K]
3 years ago
10

In a Lewis diagram for methane (CH4), which atom or atoms is inside, or central?

Chemistry
2 answers:
Ahat [919]3 years ago
7 0

Answer:

B carbon

Explanation

Lewis structure or dot structure is an easy way to get the bonding details of atoms in a molecule. If we talk about methane molecule carbon is central atom with four electrons that are bonded to four hydrogen atoms and each bond is single covalent bond.

Please see attached figure,

Hope it helps!

Marat540 [252]3 years ago
5 0

Answer:

B) carbon

Explanation:

A Lewis structure depicts the distribution of valence electrons around the atom. Since it is the valence electrons that are involved in the formation of chemical bonds, Lewis structures are therefore an import tools for visualizing molecular geometries.

In the given molecule methane, CH₄:

the valence configuration for C = 2s²2p²

the valence configuration for H = 1s¹

Since two electrons are required to form a bond, the C atom in methane can form one bond with each of the 4 H atoms. Therefore, in the Lewis diagram, the C atom will be in the center surrounded by the 4 H atoms.

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3 years ago
Help, Kinda struggling here
KengaRu [80]

The water cycle will be discussed here.

<h3>What is Water cycle?</h3>

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4 0
2 years ago
Calculate the amount of heat required to raise the temperature of a 24 g sample of water from 9°C to 23°C.
borishaifa [10]

Answer:

1400KJ/mol⁻¹

Explanation:

Amount of heat required can be found by:

Q = m × c × ΔT

<em>Where m is the mass, c is the specific heat capacity (4.2KJ for water) and ΔT is the change in temperature.</em>

Q = 24 × 4.2 × (23 - 9)

= 24 × 4.2 × 14

=   1411.2KJ/mol⁻¹

= <u>1400KJ/mol⁻¹</u>  (to 2 significant figures)

7 0
3 years ago
The radius of a vanadium atom is 130 pm. How many vanadium atoms would have to be laid side by side to span a distance of 1.30 m
monitta

Answer:

5 000 000 (5 million atoms)

Explanation:

Let us assume that a vanadium atom has a spherical shape.

diameter of a sphere = 2 x radius of the sphere

Thus,

Radius of a vanadium atom = 130 pm

                                              = 130 x 10^{-12} m

The diameter of a vanadium atom = 2 x radius

                                                         = 2 x 130 x 10^{-12}

                                               = 260 x 10^{-12} m

Given a distance of 1.30 mm = 1.30 x 10^{-3} m,

The number of vanadium atoms required to span the distance = \frac{1.3*10^{-3} }{260*10^{-12} }

                                                  = 5000000

Therefore, the number of vanadium atom that would span a distance of 1.30 mm is 5 million.

3 0
3 years ago
Calculate the pH of lemon juice to three significant figures, with a hydrogen ion concentration of
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Answer:

pH = - log [2.12 x 10^-3]

what is the log of 2.22 x 10^-3]

Take the opposite of that,

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Explanation:

3 0
3 years ago
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