If you knew the number of valence electrons in a nonmetal atom how would you determine the valence of the element

Answers

Answer 1
Answer: Basically, nitrogen has 5 valence electrons and it needs 3 more valence electrons to be able to obtain a complete octet. Thus, after the bond, N2 contains 8 valence electrons.
N2 is a chemical formula of Nitrogen gas. Nitrogen is called N2 and not N because it needs to be combined with other nitrogen element in order to complete its octet. This combination of 2 Nitrogen atoms is called triple bond with a symbol of ( : N 
≡ N: )

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According to the graph, what is the name for the change in water temperature that occurs at approximately 1300 m? A. halocline B. thermocline C. isocline D. baryocline
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A mole or fraction of a mole represents a ____ number of atoms or molecules.A : specificB : nonspecific

During natural selection, which organisms are most likely to survive as the environment changes

Answers

The organisms more likely to survive in a changing environments are the ones that have genetic variation.

Answer:

A: ones that can best adapt to and survive in the changed environment

Explanation:

Summary about the conservation of mass
Help plzzz

Answers

Answer:

Simplified, the law or principle of the conservation of mass states that matter can neither be created nor destroyed.

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Matter can’t be made or destroyed but like please!!!( mark me as brainliest)!!!!!
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How much of each gas is there in 100cm3 air?

Answers

Each 100 cm3 of air, constitutes 78cm3 nitrogen, 21cm3 oxygen and 1cm3 constitutes of other gases like Argon, ozone, carbon dioxide and water vapour in small amounts.
Dry air contains 78% nitrogen , 21% oxygen and 1%noble gases.

What are the number of molecules in 2.56 moles of water?

Answers

Answer:

1.54x10^24

Explanation:

To convert moles to molecules, multiply the number of moles by Avagadro's number (6.02x10^23).

2.56mol × 6.02x10^23 = 1.54x10^24

A flashlight battery is an example of a...?

Answers

A flashlight battery is an example of a chemical battery, specifically a type of electrochemical cell. It converts chemical energy into electrical energy through a chemical reaction.

Inside the battery, there are two electrodes, typically made of different metals or metal compounds, and an electrolyte solution. When the battery is connected to a circuit, a chemical reaction occurs at the electrodes, resulting in the flow of electrons from one electrode to the other.

This flow of electrons generates an electric current that powers the flashlight or any other device connected to the battery.

The chemical reaction within the battery is reversible, meaning it can be recharged by applying an external electrical current to reverse the reaction and restore the chemical energy within the battery.

In summary, a flashlight battery is an example of a chemical battery because it utilizes a chemical reaction to convert chemical energy into electrical energy for powering electrical devices.

Know more about chemical battery:

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chemical potential energy.

Read the following selection from the section "What Is Intubation?"Having a tube down your throat isn't exactly pleasant because it affects a patient's ability to talk
or eat. But it's important for getting the right amount of air into the lungs.
Which answer choice BEST supports the idea that intubation is a necessary part of ventilator treatment?
(A) But when the lungs fill up with fluid or become highly inflamed, the lungs can't expand enough, Lutchen
says.
(B) This actively pushes air into the lungs and can keep the levels of oxygen and carbon dioxide in the
blood close to normal.
(C) If the ventilator simply blew into a person's mouth, the air might expand their cheeks or leak out of their
noes instead of going into the lungs, he says.
(D) When the lungs are damaged, the millions of balloons take in oxygen and release carbon dioxide
differently than when they are healthy, he says.

Answers

Answer:

It may be required when respiratory distress or airway integrity cannot be achieved or maintained for any reason.

(B) This actively pushes air into the lungs and can keep the levels of oxygen and carbon dioxide in the

blood close to normal.

Explanation: