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Lostsunrise [7]
3 years ago
11

Consider the reaction pathway graph below.

Chemistry
2 answers:
barxatty [35]3 years ago
5 0
Correct Answer: option 4: <span>E and D show that the energy of the products is less than that of the reactants.

Reason: 
For the reaction:          Q + R      </span>→        N + M
<span>                                  (reactant)             (product)

From the graph, it is clearly evitable that E represent energy of reactant, while D represents energy of products. Also, value of D is less as compared to E. This signifies that, products (N+M) has less energy as compared to reactants (Q+R). Also, the reaction is exothermic in nature. 
</span>
ZanzabumX [31]3 years ago
3 0
<span>Answer: the fourth option: E and D show that the energy of the products is less than that of the reactants.


Explanation:
</span><span />

<span>The graph shows how the energy of the species (vertical axis) changes as the reaction progress (horizontal axis).
</span><span />

<span>We can see each option:
</span><span />

<span>1) A and C show that the reaction enthalpy is less than the activation energy.
</span><span />

<span>FALSE: C is the energy difference between products and reactants, and that is the enthalpy of the reaction, while C is the activation energy (the peak of the curve).


2) G and E show that this reaction is an endothermic process with heat release.
</span><span />

<span>FALSE: since G is below E, the final energy is less than the initial energy, meaning that the reaction released energy and, consequently, the reaction is exhotermic.


3) B and F show that the activated complex has less energy than the reactants.
</span><span />
FALSE
<span>The activated complex is at the peak of the curve, so it hass more energy than the reactants.
</span><span />

<span>4) E and D show that the energy of the products is less than that of the reactants.

</span><span>TRUE: indeed D is below E meaning the the energy of the products (D) is less than the energy of the reactants (E).</span>

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sergejj [24]
Google said

How many electrons fit in each shell around an atom?

The maximum number of electrons that can occupy a specific energy level can be found using the following formula:

Electron Capacity = 2n2

The variable n represents the Principal Quantum Number, the number of the energy level in question.

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Keep in mind that an energy level need not be completely filled before electrons begin to fill the next level. You should always use the Periodic Table of Elements to check an element's electron configuration table if you need to know exactly how many electrons are in each level.
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3 years ago
A 2.26 M solution of KOH is prepared. Calculate the moles and mass of solute present in a 15.2-mL sample of this solution. The m
kenny6666 [7]

Answer:

0.0344 moles and 1.93g.

Explanation:

Molarity is defined as the ratio between moles of a solute (In this case, KOH), and the volume. With molarity and volume we can solve the moles of solute. With moles of solute we can find mass of the solute as follows:

<em>Moles KOH:</em>

15.2mL = 0.0152L * (2.26mol / L) = 0.0344moles

<em>Mass KOH:</em>

0.0344 moles * (56.11g/mol) = 1.93g of KOH

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3 years ago
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SVEN [57.7K]

Answer:

2

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The change of state occurs at a constant temperture and pressure. In the grahp we can see while the time passes, the temperature doesn't change.

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The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom. Consider the element helium. Its atomic number is 2, so it has two protons in its nucleus.

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5 0
2 years ago
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