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Harman [31]
3 years ago
12

When an electron moves from one energy level to another, if the transition is to a _______ energy level, energy is absorbed, and

a photon is _______ by the atom.
Question 16 options:
higher; absorbed
lower; emitted
lower; absorbed
higher; emitted
Chemistry
1 answer:
gregori [183]3 years ago
4 0

Answer:

lower,emitted

Explanation:

when electron changes level,  it decreases energy and emits photon.

photon is emitted when it goes from higher to lower energy level

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Answer:

whathappensinthisstory

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3 years ago
Which of the following is a change from a more condensed to a less condensed state of matter? Freezing Condensing Evaporating So
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Evaporating.

This is because evaporation occurs for things such as water coming in contact with a heat source that cause molecules to run crazy and begin to go farther and farther apart, becoming steam and evaporation in the air.

Therefore, during the process of evaporation, molecules become less condensed.

Hope this helps!
8 0
3 years ago
It is desired to produce 2.25 grams of dichloromethane (CH2Cl2) by the following reaction. If the percent yield of dichlorometha
Allushta [10]

Answer:- 3.12 g carbon tetrachloride are needed.

Solution:- The balanced equation is:

CH_4+CCl_4\rightarrow 2CH_2Cl_2

From given actual yield and percent yield we will calculate the theoretical yield that would be further used to calculate the grams of carbon tetrachloride.

percent yield formula is:

percent yield = (\frac{actual}{theoretical})100

65.5=(\frac{2.25}{theoretical})100

theoretical=(\frac{2.25(100)}{65.5})

theoretical = 3.44 g

From balanced equation, there is 2:1 mol ratio between dichloethane and carbon tetrachloride.

Molar mass of dichloroethane is 84.93 gram per mol and molar mass of carbon tetrachloride is 153.82 gram per mol.

3.44gCH_2Cl_2(\frac{1molCH_2Cl_2}{84.93gCH_2Cl_2})(\frac{1molCCl_4}{2molCH_2Cl_2})(\frac{153.82gCCl_4}{1molCCl_4})

= 3.12gCCl_4

So, 3.12 grams of carbon tetrachloride are needed to be reacted.

8 0
3 years ago
Why the moon is the barycenter of earth?
baherus [9]
Because it wanted to be
4 0
3 years ago
What path does water take as it collects salt while flowing to the ocean?
vichka [17]

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By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate. Ocean currents are also critically important to sea life. They carry nutrients and food to organisms that live permanently attached in one place, and carry reproductive cells and ocean life to new places.

Explanation:

i got this off my chemistry sight.. your welcome

6 0
3 years ago
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