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avanturin [10]
3 years ago
9

Think about what would happen if this substance were first in the solid phase, then melted in a liquid. What can you say about t

he melting point of the solid compared to the freezing point of the liquid?
Chemistry
1 answer:
alexira [117]3 years ago
3 0

Answer:

The melting point of the solid is higher in temperature then it is compared to the freezing point of the liquid.

Explanation:

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This chart shows characteristics of three different types of atoms.
g100num [7]

Answer:

Atom X will accept electrons from Atom Y.

Explanation:

6 0
3 years ago
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as the temperature of a gas increases then what hapenns to the volume of the gas if the pressure remains the same.
Brrunno [24]

The volume increases as well.

Temperature and volume have a direct relationship which means if one were to increase, the other would to. If one were to decrease, the other would do that as well.

They practically went hand in hand.

Hope this helps!

4 0
3 years ago
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Draw a resonance structure, complete with all formal charges and lone (unshared) electron pairs, that shows the resonance intera
Angelina_Jolie [31]

Answer:

See explanation

Explanation:

The acetoxy group in ortho position in phenyl acetate does interact with the phenyl moiety in the molecule via resonance.

This detailed interaction of the  acetoxy group in ortho position in phenyl acetate with the phenyl moiety in the molecule via resonance is shown in the image attached.

This interaction is made possible because the oxygen atom of the acetoxy group has lone pairs of electrons that are suitably positioned to interact with the ring via resonance.

8 0
4 years ago
Which of the following non-hydrogen atom transitions does the photon have at its long wavelength?
suter [353]

Answer:

The move from Level n=3 to Level n=2 has the long wavelength.

Explanation:

First, due to the selection rules, only transitions between adjacent levels are allowed, thus, only a transition between Level n=3 to Level n=2 or Level n=5 to Level n=4 are allowed. The two first options are wrong.

Second, analyzing the transition between Level n=3 to Level n=2 and the transition between Level n=5 to Level n=4 it is necessary to think in terms of the equation of the difference of energy for these type of transitions:

ΔE = \frac{h^{2}}{8.m.L}(n_{LUMO}^{2} -n_{HOMO}^{2} ) (1)

The difference in energy (ΔE) is directly proportional to the quadratic difference between the 'n' levels of transition. Therefore, If the transition occurs between smaller 'n' levels the difference of energy will be smaller too.

Also, the energy (ΔE) is inversely proportional to the wavelength (λ) so a smaller energy means a larger wavelength.

ΔE = c / λ (2)

Hence, the move from Level n=3 to Level n=2 has a long wavelength.

In order to calculate this wavelength is necessary to replace the data on equation (1) and (2).

6 0
4 years ago
What fraction of the enzymes will be active at ph=4.07 explain?
Ratling [72]
PH is the scale of measurement to check either the solution is acidic or basic. if the pH value is greater than 7, the solution is towards basicity and if the pH value is less than 7, the solution is towards acidity.
pKa is the dissociation constant and it is used to describe the change in pH value, when pKa is equal to pH: 50% of the ionizable group is protonated and 50% of the enzymes will be active.
So 50% of the enzymes will be active.
8 0
3 years ago
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