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astraxan [27]
3 years ago
15

I WILL GIVE U BRAINLIEST IF UR CORRECT

Chemistry
2 answers:
KiRa [710]3 years ago
7 0

Answer:

D: a new substance

Explanation:

Chemical reaction

A change in matter that produces on or more new substances

baherus [9]3 years ago
3 0

Answer:

<u>D. A new substance</u> is always a result of a chemical reaction.

Explanation:

In a chemical reaction, one or more reactants reacts/decomposes to form one or more products.

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True

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Which of the following statement is true?
Svetradugi [14.3K]

Answer:

a. The resonance effect of the hydroxyl group stabilizes the anionic intermediate

Explanation:

The resonance effect stabilizes the the charge through the delocalization of the pi bonds. The resonance stabilization mainly occurs in the conjugated pi systems.

For example, phenol forms a strong hydrogen bonds than the nonaromatic alcohols as the $O_2-H_2$ dipole present in the hydroxyl group is being stabilized by the presence of the aromatic ring of phenol.

Thus the resonance effect of the hydroxyl group stabilizes the anionic intermediate.

4 0
3 years ago
What are variables that do not change in a experiment called
lozanna [386]
Controlled variables: do not change as they must be held constant

Independent variables: are controlled and manipulated

Dependent variables: effected by changes to the independent variable
3 0
4 years ago
Which molecule does not contain hydrogen bonding intermolecular attractive forces?
Delicious77 [7]

Hydrogen bonding occurs between polar molecules that have a hydrogen atom that is directly bonded to a nitrogen, an oxygen, or a fluorine atom. That creates an extremely polar molecule with a permanent net dipole moment.

A hydrogen bond (or H-bond) is a primarily electrostatic force of attraction between a hydrogen (H) atom which is covalently bound to a more electronegative "donor" atom or group, and another electronegative atom bearing a lone pair of electrons—the hydrogen bond acceptor (Ac). Such an interacting system is generally denoted Dn–H···Ac, where the solid line denotes a polar covalent bond, and the dotted or dashed line indicates the hydrogen bond.The most frequent donor and acceptor atoms are the second-row elements nitrogen (N), oxygen (O), and fluorine (F).

To learn more about hydrogen bond refer here:

brainly.com/question/10904296

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3 0
2 years ago
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