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Xelga [282]
3 years ago
14

What is rusting of iron?​

Chemistry
2 answers:
inn [45]3 years ago
6 0

Answer:

Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Unlike rust, which can flake off the surface of iron and steel objects, the layer of aluminium oxide does not flake off.

Explanation:

Ivanshal [37]3 years ago
6 0
Rusting = oxidation reaction
Iron = reacts with oxygen and water to form hydrated iron oxide, we then start to see rust.
This prevents the metal from coming in any contact with air. Hope this helps :)
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Which of the following are likely to form a covakent bond
Dmitriy789 [7]

Answer:

For the most part, non-metals (excluding Nobel gases) are the most likely to form covalent bonds. Pure covalent bonds are formed between atoms with the same electronegativity, ie. they are trying to hold on to the electrons in the bond with the same strength.

5 0
4 years ago
Choose the compound below that contains at least one polar covalent bond, but is nonpolar.
Ghella [55]

Answer:

  • The correct choice  is the letter <em>d. CF₄ is a compound that contains at least one polar covalent bond (four in fact), bust is nonpolar</em>.

Explanation:

For a compound to have <em>at least one polar covalent bond, but being a not polar compound</em>, the geometric configuration of the molecule must lead to a symmetrical distribution of the charges. This is because, in that way, the dipoles will cancel each other, producing a null net dipole, which makes a non-polar molecule.

Consider the four given molecules:

<u>a. SeBr₄</u>

Since, Se has six valence electrons, and it is bonded to four Br atoms, there will be one lone electron pair which will make that the charge is not symmetrically distributed, leading to a polar molecule. so this is not correct choice.

<u>b. HCN</u>

HCN's structure is linear: H-C≡N.

Nitrogen is more electronegative than carbon an so it is pulling the electrons on in the triple bond with carbon (C≡N) more than the hydrogen on the other side of carbon (H-C)

Therefore, there is a net a dipole moment towards N and the molecule is polar.

<u>c. ICl₃</u>

This is quite evident non-symmtrical and so you quickly can predict that is is polar.

<u>d. CF₄</u>

This molecule has four F atoms around a C atom.

Since, F is more electronegative than F, each C - F bond has a dipole moment (negative charge is closer to F atoms). Then, whe have four dipole moments (<em>covalent bonds</em>) on each CF₄ molecule.

Now, since the molecule is symmetric the four dipoles will cancel each other and the compund in nonpolar.

In conclusion, the correct choice  is the letter <em>d. CF₄ is a compound that contains at least one polar covalent bond (four in fact), bust is nonpolar.</em>

8 0
3 years ago
According to Jeff Bezos, founder of Amazon.com, the _____ refers to markets that are too small to justify a mass media campaign,
Y_Kistochka [10]

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8 0
4 years ago
Please help me with this activity!! I have to submit it ASAP. It's attached as a pdf. Not too long and for an Honors Electrons l
brilliants [131]

(1) Seven electrons

1s² 2s²2p³

There are two electrons in the 2s subshell and three in the 2p subshell. The remaining two electrons are in the inner 1s subshell.

(2) 22 electrons

1s² 2s²2p⁶ 3s²3p⁶ 4s²3d²

There are two electrons in the 4s subshell and two in the 2p subshell. The remaining 18 electrons are in the inner subshells.

(3) 17 electrons

1s² 2s²2p⁶ 3s²3p⁵

There are two electrons in the 3s subshell and five in the 2p subshell. The remaining 10 electrons are in the inner subshells.

(4) n = 4, l = 2

(5) N=2 I=0 MI=0

(6) There can be two electrons in one orbital maximum. The s sublevel has just one orbital, so can contain 2 electrons max. The p sublevel has 3 orbitals, so can contain 6 electrons max. The d sublevel has 5 orbitals, so can contain 10 electrons max.

(7) n = 4 can hold up to 16 electrons

There are 4 sublevels; 42, 4p, 4d and 4f

4s (1 orbital), 4p (3 orbitals)

4d (5 orbitals), 4f (7 orbitals)

Maximum number of electrons in energy level: 16

s = 1 orbital

p = 3 orbitals

d = 5 orbitals

f = 7 orbitals

Add these up;

1 + 3 + 5 + 7 = 16

(8) 14 electrons If l = 3, the electrons are in an f subshell. The number of orbitals with a quantum number l is 2l + 1, so there are 2×3 + 1 = 7 f orbitals. Each orbital can hold two electrons, so the f subshell can hold 14 electrons.

sorry i didn't do the last two.. also sorry if some or none of these are correct, i tried my best

7 0
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grigory [225]

Answer:

Solute

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the substance that dissolves in a solvent to produce a homogeneous mixture.

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