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ycow [4]
3 years ago
8

What does the emission spectrum tell us about the structure of an atom?

Chemistry
1 answer:
tatiyna3 years ago
8 0

Answer:

The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state. ...  

Explanation:

Therefore, spectroscopy can be used to identify elements in matter of unknown composition.

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Iron reacts with oxygen to produce iron(iii) oxide.4 fe(s) + 3 o2(g) → 2 fe2o3(s)if 6.4 moles of fe react with excess o2, how ma
sattari [20]
3.2mol
hope it can help you
4 0
3 years ago
Biological membranes are selectively permeable, allowing certain molecules to cross the membrane, but not others. Classify the m
ddd [48]

Answer:

Following are the solution to these question:

Explanation:

Simple diffusion implies which molecules can move across a cell membrane instead of using the incorporated protein structure channels. Its flow of molecules across these canals is enabled by diffusion. It has steroid hormones and N2.

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3 0
3 years ago
The brightness of a star is most dependent on the star's...Explain why.
gulaghasi [49]
I would say the answer is A - a stars mass

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Mass is the key factor in determining the lifespan of a main sequence star, its size and its luminosity ( brightness)




Two characteristics define brightness: luminosity and magnitude. Luminosity is the amount of light that a star radiates. The size of the star and its surface temperature determine its luminosity. Apparent magnitude of a star is its perceived brightness, factoring in size and distance, while absolute magnitude is its true brightness irrespective of its distance from earth.
8 0
3 years ago
The elements lithium and oxygen react explosively to from lithium oxide (Li2O). How much lithium oxide will form if 3.03 mol of
lianna [129]
The reaction equation:
2Li + O → Li₂O

Molar ratio of Li to Li₂O is:
2 : 1
So if 3.03 moles of Li are present:
2/1 = 3.03 / x
x = 1.515 moles of Li₂O will be produced.
7 0
3 years ago
Describe how and why the statue of the Sphinx has changed since it<br>was made.​
Lyrx [107]

Answer:

I don't know if this will help but. The Great Sphinx has suffered from erosion and vandalism. Hatshepsut's stepson was too young to rule at the time of her husband's death, so she just took the job.

8 0
3 years ago
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