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dangina [55]
2 years ago
7

In order to follow the octet rule, how many valence electrons do most elements

Chemistry
2 answers:
-BARSIC- [3]2 years ago
6 0

Answer: D (8)

Explanation:

horsena [70]2 years ago
5 0

Answer:

d. 8

Explanation:

The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.

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Magnesium phosphate is used as a dental polishing agent. how many moles of ions (cations and anions together) are in 1 mole of m
S_A_V [24]
The answer to this question would be:5 mol

To answer this question, you need to know the chemical equation of mg3(po4)2 when forming an ion. The equation should be: <span>mg3(po4)2= 3Mg(2+)  +2PO4(3-)

That means for 1 mol of </span><span>mg3(po4)2 there will be 3 magnesium(cation) ion and 2 phosphates(anion) ion, the result would be 5 mol of ion.</span>
7 0
3 years ago
Which line-angle formula represents an alkene?
Vladimir79 [104]

Answer:

Option 3.

Explanation:

Alkenes are generally unsaturated hydrocarbon with carbon to carbon double bond (C=C).

From the options given above, only option 2 and 3 contain carbon to carbon double bond (C=C).

Option 2 is called a benzene ring and not an alkene. Benzene are not classified as alkenes because the double bond between the carbon can not be broken i.e benzene does not undergo addition reaction like the alkenes. Benzene tends to show more stability than the alkenes.

This leaves us with option 3 as the answer to the question because it contains carbon to carbon double bond (C=C)

4 0
3 years ago
Two jars are placed on a counter with a McDonald's French Fry inside, one has a lid, the other does not. They are left alone to
Agata [3.3K]

Answer: days

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7 0
3 years ago
What information does the specific heat capacity give about a substance?
mariarad [96]

how much energy is needed to raise it's tenperature

7 0
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ankoles [38]

Explanation:

attribute of a person that often cannot be measured directly but can be assessed using numbers of indicators or manifest variables

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