Which best describes a chain reaction associated with a nuclear reaction? Neutrons released during a fusion reaction cause other nuclei to fuse. Neutrons released during a fission reaction cause other nuclei to split. Helium nuclei released during a fission reaction cause other nuclei to split. Helium nuclei released during a fusion reaction cause other nuclei to fuse.

Answers

Answer 1

Answer: The statement that describes a chain reaction brought about by a nuclear reaction is "neutrons released during a fission reaction cause other nuclei to split." This is applicable to fission reactions only wherein atoms split and produce neutrons that also cause further atoms to split, thus creating a chain or series of reactions.

Answer 2

Answer:

Answer:

Explanation:

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What is the molar mass for the following compound , rounded to the nearest gram ? Na2S2O3

Answers

mass of Na = 23 u
mass of S = 32 u
mass of oxygen = 16 u

Thus, Na2S2O3

= 23(2) + 32(2) + 16(3)

= 46 + 64 + 48

= 110 + 48
= 158 u.

Highlight the basic points in Lewis and Langmuir theory of electrovalency

Answers

The correct answer for the question that is being presented above is this one: "Electrovalency is characterized with the transferring of one or more electrons from one atom to another together with the formation of ions and as well as the number of positive and negative charges.

The Lewis and Langmuir theory of electrovalency (and as well as Kossel's) is dealing with Ionic bonds.

Lewis: electron-pair sharing, octet rule, Lewis Symbols or StructureLangmuir: introduced term "covalent" bond, and popularized Lewis's ideas

The Lewis-Langmuir electron-pair or covalent bond is referred as the homopolar bond, where the complete transfer of electrons give rise to ionic, or electrovalent bond (1) through attraction of opposite charges.

when 200 grams of water cools from 50 c to 25 c the total amount of heat energy released by the water is?

Answers

Answer : The heat released by the eater is, $2.1* 10^4J$ [/tex]

Explanation :

Formula used :

$Q=m* c* \Delta T$

or,

$Q=m* c* (T_2-T_1)$

where,

Q = heat released = ?

m = mass of water = 200 g

c = specific heat of water = $4.184J/g^oC$

$T_1$ = initial temperature = $50^oC$

$T_2$ = final temperature = $25^oC$

Now put all the given value in the above formula, we get:

$Q=200g* 4.184J/g^oC* (25-50)^oC$

$Q=20920J=2.1* 10^4J$ [/tex]

Therefore, the heat released by the eater is, $2.1* 10^4J$ [/tex]

Specific Heat:
Heat Energy= Mass of substance X Specific Heat X Change in Temp.
1. change in temp |50-25| = 25
2. specific heat of Water(H2O) = cal/g (Celsius) 1.000
heat energy= 200g X 1.000 X 25
Heat energy = 5000cal

The phase of matter where particles at extremely high temperatures become ionized.

Answers

Plasma is the phase of matter where particles at extremely high temperatures became ionized. The phase of matter is the composition of matter which depends on temperature. Plasma is the hot ionized gas consisting of approximately equal numbers of positively charge ions and negatively charged electrons.

Answer: Plasma

Explanation:

There are four states of matter

Solid state : It is a state in which the particles are closely packed and does not have any space between them. This state has a definite shape and volume.

Liquid state : It is a state in which the particles are present in random and irregular pattern. The particles are closely arranged but they can move from one place to another. This state has a definite volume but does not have a fixed shape.

Gaseous state : It is a state in which the particles are loosely arranged and have a lot of space between them.This state has indefinite volume as well as shape.

Plasma is the state of matter in which the gas is present in ionized form and is at high temperatures. Thus due to the presence of charged particles, they allow electric current to pass through them and are good conductors of electricity.

The bonds in BaO are best described ascovalent, because valence electrons are shared
covalent, because valence electrons are transferred
ionic, because valence electrons are shared
ionic, because valence electrons are transferred

Answers

In order to determine whether a bond is ionic or covalent, you need to know whether or not it is completely composed of nonmetal atoms or both metal and nonmetal ions.

Barium is a metal and Oxygen is a nonmetal, therefore there is no possible way they could bond unless they were attracted to opposite charges. Specifically, only if Barium becomes a cation and Oxygen becomes an anion then could they bond.

Now cation and anion both have the word "ion" in them, so therefore it must be an ionic bond.

Now we need to know the definition of a bond. A bond is formed when two elements are joined together by sharing their valence electrons.

Therefore, your answer should be:

Ionic, because valence electrons are shared.

1. What kind of diagram shows how energy flows from one organism to another?a. producer c. consumer
b. ecology d. food chain

Answers

It would be D.the food chain

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