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deff fn [24]
3 years ago
7

F.piall IL WILTWhat is octet? Why is it inactive?​

Chemistry
2 answers:
max2010maxim [7]3 years ago
4 0

Answer:

Join here if u r a girl owu-bqfx-fvq

Vedmedyk [2.9K]3 years ago
4 0
What is octet: Octet, in chemistry, the eight-electron arrangement in the outer electron shell of the noble-gas atoms.

Why it’s inactive: An atom with an octet is not reactive because it has a filled outer shell of electrons.

hope this helps <3
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Calculate the acid dissociation constant Ka of a 0.2 M solution of weak acid that is 0.1% ionized is ________.
mars1129 [50]

Answer: acid dissociation constant Ka= 2.00×10^-7

Explanation:

For the reaction

HA + H20. ----> H3O+ A-

Initially: C. 0. 0

After : C-Cx. Cx. Cx

Ka= [H3O+][A-]/[HA]

Ka= Cx × Cx/C-Cx

Ka= C²X²/C(1-x)

Ka= Cx²/1-x

Where x is degree of dissociation = 0.1% = 0.001 and c is the concentration =0.2

Ka= 0.2(0.001²)/(1-0.001)

Ka= 2.00×10^-7

Therefore the dissociation constant is

2.00×10^-7

7 0
3 years ago
Mara and ivy are asked to identify two minerals in science class. To do this, they decided to study the physical properties of t
scZoUnD [109]

Answer:

2 only is a pretty accurate answer the others dont make sense  to me.

Explanation:

8 0
3 years ago
Read 2 more answers
#1: The element that loses electrons in a chemical reaction is said to have been which of the following?
Mrrafil [7]
#1: The element that loses electrons in a chemical reaction is said to have been which of the following? A. reduced

B. oxidized

C. combusted

D. rusted

**idk, is it reduced or oxidized??

Answer: oxidized. The element that loses electrons increases its oxidation number (becomes more positve or less negative) and this is oxidation.


Which type of reaction occurs if one element gains electrons and another loses electrons?

A. combustion

B. synthesis

C. oxidation-reduction

D. double-displacement

**my answer: C

Yes, oxidation-reduction

#3: What is the oxidation number for phosphorus in H4P2O7?

A. +5

B. +3

C. +1

D. - 1

**my answer: A. +5

This is the way to calculate it 4(+1) + 2x + 7(-2) = 0 => x = +5



#4: What is the oxidation number for phosphorus in Na2HPO3?

A. +5

B. +3

C. +1

D. - 1

**my answer; B. +3

is that right??

Right

2(+1) + 1 + x + 3(-2) = 0 => x = 6 -1 -2 = 3 (positive)
5 0
4 years ago
Read 2 more answers
Why do sea and ocean levels recede (more coast land is exposed) when the planet goes through a major ice age?
fomenos
This happens because ice is made up of water, and when that water freezes, it never goes back to land, thus there being less water on the coastline. But when the ice starts to melt, the water will even out quickly, and the water will go to the coastline, causing the tide to rise. Mark brainliest, please.

3 0
3 years ago
what mass of small stones would be needed to make the strongest concrete? give a reason for your awnser.
VikaD [51]

Answer:

For a good consert mix aggregate needed to the clean hard strong partical free of absorb chemicals or coating clay and other fine materials

3 0
4 years ago
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