In an energy diagram, the reactants are at a higher potential energy compared to the products. Which of the following best describes this reaction?A)

It is endothermic and will have a positive enthalpy.

B)

It is endothermic and will have a negative enthalpy

C)

It is exothermic and will have a positive enthalpy.

D)

It is exothermic and will have a negative enthalpy.

Answers

Answer 1

Answer:

Answer is (D) - It is exothermic and will have a negative enthalpy.

If the reactants are at a higher potential energy compared to the products, it means reactants have more energy than the products. That energy is released to the environment as heat. Due to the releasing of heat to the surrounding, the reaction is exothermic. Since the reaction is exothermic; the enthalpy of the reaction will be negative value.

Related Questions

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Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electron will be most strongly attracted toNa.Al.P.Cl.

Choose the letter of the choice that best completes the statement or answers the question. Elements in the same group have the same __________. A. atomic radius
B. energy level of outer electrons
C. nuclear charge
D. number of valence electrons

Answers

I think the correct answer from the choices listed above is option D. Elements in the same group have the same number of valence electrons. They have the same number of electrons in the outer orbital. They are the electrons that are involved with chemical bonding with other elements.

Elements in the same group have D. Same number of valence electrons.

The mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of uranium?

Answers

Answer: The isotope will be represented by symbol $^(238)_(92)U$ .

Solution:

The isotope of an element is represented by:

$^(A)_(Z)X$

X = Symbol of an element

Z = Atomic Number of that element = Total number of electrons or protons

A = atomic mass of that element = Z+ total number of neutrons

So the uranium isotope with atomic mass of 238 and atomic number of 92 will be written as:

$^(238)_(92)U$

Answer:

B. 238/92 U

Explanation:

Correct answer on edge 2022

Which characteristic would you predict from a solution that has a pH of 5?sour taste
very high concentration of hydroxide ions
slippery feeling
very low concentration of hydronium ions

Answers

Answer : The correct option is, sour taste

Explanation :

Acid : It is a substance that has ability of donating proton or hydrogen ion or hydronium ion, $H^+$ .

The properties of an acid are :

Acids are sour in taste.
The texture of an acid solution is sticky.
It changes the color of the litmus paper to red.
It react with a metal to give compound and hydrogen gas.
The pH of an acid is less than 7.

Base : It is a substance that has ability of donating hydroxide ion, $OH^-$ .

The properties of an base are :

Base are bitter in taste.
The texture of an base solution is slippery.
It changes the color of the litmus paper to blue.
It does not react with a metal.
The pH of a base is more than 7.

As per question, the pH is 5 that means the solution is acidic in nature and follow the properties of an acid. So, the pH = 5 has the sour taste characteristic. While the other options are the properties of a base.

Hence, the correct option is, sour taste

With a pH of five, it would mean that this substance is a weak acid one would also it expect it would be sour.

The function of most proteins depends primarily on the

Answers

type and order of amino acids

1.type and order of amino acids. 2.environment of the organism.3.availability of starch molecules.

Which type of extremophile is characterized by thriving in very hot and salty conditions? a) Halophile b) Psychotroph c) Mesophile d) Acidophilic

Answers

Answer:

a) Halophile

Explanation:

Halophiles are extremophiles characterized by their ability to thrive in very hot and salty conditions, such as salt flats, salt mines, or hypersaline environments. They have adapted to high levels of salt and can withstand extreme salinity.

What region of the atom contains most of the atoms mass?

Answers

Answer:

Nucleus

Explanation: it is the center of the atom, and contains protons and nuetrons

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