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3 years ago

In a solution of a carbonated beverage, what is the dissolved carbon dioxide?

2 answers:

7 0

Answer is B. The Solute.

In aqueous solution, solvent is water and solute (in this example carbon dioxide CO₂) is a substance dissolved in water.
The amount of solute that can be dissolved in a solvent depends of chemical composition, temperature and pressure.
Solution has a uniform composition and is able to be separated by physical means.

insens350 [35]3 years ago

4 0

Answer:

Explanation:

D is the correct answer because, in aqueous solution, solvent is water and solute (in this example carbon dioxide CO₂) is a substance dissolved in water. The amount of solute that can be dissolved in a solvent depends of chemical composition, temperature and pressure

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Draw the resonance structures for the conjugate base of Phenol (C6H6O). In one sentence, explain why phenol (C6H6O) has a pKa of

notsponge [240]

Answer:

The four resonance structures of the phenoxide ion are shown in the image attached

The conjugate base of cyclohexanol has only one resonance contributor, while

the conjugate base of phenol has four resonance contributors.

Explanation:

In organic chemistry, it is known that structures are more stable if they possess more resonance contributors. The greater the number of contributing canonical structures, the more stable the organic specie. Since the phenoxide ion has four contributing canonical structures, it is quite much more stable than cyclohexanol having only one contributing structure to its conjugate base. Hence the PKa(acid dissociation constant) of phenol is lesser than that of cyclohexanol. The conjugate base of phenol is stabilized by resonance.

6 0

3 years ago

A ball of mass 0.2 kg is dropped from a height of 10 m. How much mechanical energy does it have right before it hits the ground?

lana [24]

Answer:

19.6 J

Step-by-step explanation:

Before the ball is dropped, it has a <em>potential energy </em>

PE = mgh

PE = 0.2 × 10 × 9.8

PE = 19.6 J

Just before the ball hits the ground, the potential energy has been converted into kinetic (<em>mechanical</em>) energy.

KE = 19.6 J

3 0

3 years ago

How is sound energy produced? A. by vibrating objects B. by stationary objects C. by temperature differences D. by objects being

viva [34]

Sound energy is produced by vibrating objects.

Example: when you speak you vibrate the air molecules in the air. If you where to speak in space no “sound” would be produced since there is nothing for the vibration of your voice to travel through.

8 0

3 years ago

Read 2 more answers

Some animals have an organ called the gizzard. The gizzard is muscular and helps to crush up hard food. Earthworms and many bird

fiasKO [112]

The gizzard body part is apart of the gastrointestinal system

5 0

3 years ago

The bond energy between carbon and oxygen is 358 for a single bond (C–O) and 745 for a double bond (C=O). Why is the bond energy

erastovalidia [21]

This problem is providing the bond energy for the bonds C-O and C=O which are 358 and 745 respectively, so that a feasible explanation to this behavior is required. At the end, one concludes the correct answer is C. "additional electrons repel each other, increasing the distance between atoms, and increasing bond energy" according to the following:

<h3>Bond energy:</h3><h3 />

In chemistry, we study the bond energy as the energy required to break the bond, binding two elements. In such a way, we can evidence that the more bonds between the atoms, the higher the bond energy such as in the case of C-O and C=O.

In such a way, since bonds are formed between valence electrons, we see that the more of these an atom has available for bonding, the farther away they will be, as they are repelled; thus, causing more distance between atoms and making the bond to be longer.

Hence, the greater the distance between two atoms in a bond, the higher the bond energy; that's why the answer to this question is C. Additional electrons repel each other, increasing the distance between atoms, and increasing bond energy.

Learn more about bond lengths: brainly.com/question/13683866

8 0

2 years ago