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ratelena [41]
4 years ago
11

HELP ASAP In which reaction are the atoms of elements rearranged?

Chemistry
2 answers:
ivanzaharov [21]4 years ago
7 0

Explanation:

A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does.

In a chemical reaction, the atoms and molecules that interact with each other are called reactants.

In a chemical reaction, the atoms and molecules produced by the reaction are called products.

In a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed.

In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

hammer [34]4 years ago
5 0

Answer:

C. Explain ONE way in which the USA & USSR competed against each other during the Cold

War in the Post-World War Two period (c. 1945-present)

HURRY

Dr. Khan works for the marketing department of a company that manufactures mechanical toy dogs. Dr. Khan has been asked to assess the effectiveness of a new advertising campaign that is designed to be most persuasive to people with a certain personality profile. She brought four groups of participants to the lab to watch the video advertisements and to measure the likelihood that they would purchase the toy, both before and after watching the ad. The results of Dr. Khan’s study are presented below.

Part A

Explain how each of the following concepts applies to Dr. Khan’s research.

Survey

Dependent variable

Big Five theory of personality

Part B

Explain the limitations of Dr. Khan’s study based on the research method used.

Explain what Dr. Khan’s research hypothesis most likely was.

Part C

Use the graph to answer the following questions.

How did the trait of agreeableness affect how people responded to the new ad campaign?

How did the trait of conscientiousness affect how people responded to the new ad campaign?

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Assuming an ionization efficiency of 13.0%, how many such photons are needed to ionize 1.00×1016 atoms?
sammy [17]

Answer:

7.69x10^{16}

Explanation:

The ionization is the energy necessary to transform an atom in an anion. So, it's the energy it requires to gain an electron.

This ionization occurs for the photoelectric effect - the emission of electrons by  metal using photons. So, if the efficiency is 100%, 1 photon can ionize 1 atom, but for an effficiency of 13.0%:

N = \frac{1.00x10^{16}}{0.13}

N = 7.69x10^{16}

Where N is the number of photons.

6 0
3 years ago
Write the nuclear decay equation for the alpha particle decay of Pu-243
Mkey [24]

Answer:

Explanation:

The reaction can be represented by this nuclear equation: 23892U → 23490Th + 42He + Energy.

7 0
3 years ago
How does Gas Trapping bottles Monitor Volcanos?
Marta_Voda [28]

Answer: the pressure releases gas. The two most abundant gases are sulfur dioxide and carbon dioxide, and if levels of these gases increase,

Explanation:

4 0
3 years ago
Aluminum hydroxide + sodium nitrate reaction type
elena55 [62]

Answer:

.

Explanation:

8 0
3 years ago
Consider the general reversible reaction. Lower A upper A plus lower B upper B double-headed arrow lower C upper C plus Lower d
BlackZzzverrR [31]

Answer:

K e q equals StartFraction StartBracket upper C EndBracket superscript lower c StartBracket upper D EndBracket superscript lower D over StartBracket upper A EndBracket superscript lower a StartBracket upper B EndBracket superscript lower b EndFraction.

Explanation:

In order to aid understanding of the question, let me put the words into a proper chemical reaction equation.

aA + bB ⇄cC + dD

We must recall that the equilibrium constant often designated as Keq is given as;

Keq= product of the concentration of product species raised to the power of their respective molar coefficients / product of the concentration of reactant species raised to the power of their respective molar coefficients

Hence from what was written above, I can safely write;

Keq= [C]^c [D]^d / [A]^a [B]^b

This has been represented in words in the answer given above.

6 0
3 years ago
Read 2 more answers
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