CHEMISTRY HIGH SCHOOL

What does the frequency of a wave represent

Answers

Answer 1
Answer:

Answer:

Explanation:

Frequency is a magnitude that measures the number of repetitions/time of a wave.

Let's remember that a wave is a periodic movement whose propagation develops in a vacuum or in a physical environment.
Answer 2
Answer: the number of waves passing in a certain amount of time

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Based upon the pH scale, a vegetable with a pH of 5.3 would be

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It would not be a base, a base on the pH scale is from 8-14, an acid is from 1-6. There for it would be an acid.
A vegetable with a pH of 5.3 would be base, not acid. One exemple is celery 

The bond between Br atoms in a Br2 molecule is(1) ionic and is formed by the sharing of two valence electrons
(2) ionic and is formed by the transfer of two valence electrons
(3) covalent and is formed by the sharing of two valence electrons
(4) covalent and is formed by the transfer of two valence electrons

Answers

The bond between Br atoms in an Br2 molecule is concealment and is formed by sharing of two valence electrons.

Final answer:

The bond between Br atoms in a Br2 molecule is covalent and is formed by the sharing of two valence electrons.

Explanation:

The bond between Br atoms in a Br2 molecule is covalent and is formed by the sharing of two valence electrons.

In a covalent bond, atoms share electrons to complete their outer electron shell. In the case of a Br2 molecule, each Br atom has 7 valence electrons and needs 1 more electron to achieve a stable octet arrangement, so they share one pair of electrons to achieve this.

The bond between Br atoms in a Br2 molecule is covalent and is formed by the sharing of two valence electrons.

Learn more about Bonding in Br2 molecule here:

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At 298 K, oxygen (O2) and ozone (O3) have different properties because their(1) atoms have different atomic numbers(2) atoms have different atomic masses(3) molecules have different molecular structures(4) molecules have different average kinetic energies

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Answer: (3) molecules have different molecular structures.


Explanation:


1) Oxygen (O₂) and ozone (O₃) are allotropes of each other.


2) Allotropes are different structural forms of a same element with different structures and properties, when they are in the same state: solid, liquid, gas.


3) The bonds is what define the structure and properties of the substances, so since O₂ has only two bonds and O₃ has three bonds, the properties and behaviors of the element are different.


4) Other example of allotropes are graphite and diamond: two different forms of carbon. Both, graphite and diamond are formed only by carbon atoms, but they are bonded differently so, as you know, diamond and graphite have different properties: graphite is very soft while diamond is one of the hardest known substances.

Which one has the less density?

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Answer:

A

Large mass but not as much volume, so not as dense...

Explanation:

Answer:

C

Explanation:

You take the mass/volume to find density.

Free radicals are molecules which: A)Damage cell membranes, DNA, and LDL. B)Steal electrons from molecules of surrounding tissues. C)All answers are correct. D)Are highly unstable. E)Are missing an electron.

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C) All answers are correct. Free radicals damage cell membranes, DNA, and LDL, steal electrons from molecules of surrounding tissues, are highly unstable, and are missing an electron

____ Turns food into a new form: a form that cells can use. A chemical change. B grinding. C physical change. D mixing. Why

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The correct answer is A. Chemical change turns food into a new form, a form that cells can use. It happens because the food we eat cannot be processed by cells so several reactions inside our body allow chemical changes to the food we ate turning them to usable compounds for our cells.
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