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Setler [38]
3 years ago
14

How is it possible for scientists to know the composition of stars without traveling to the star?

Chemistry
1 answer:
Nataly [62]3 years ago
8 0

Answer:

One of the most common methods used today to determine the composition of stars is <u>spectroscopy</u>.

Explanation:

Spectroscopy is the study of the interaction between matter and electromagnetic radiation as a function of the wavelength or frequency of the radiation.

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Match each term with the appropriate definition.
maks197457 [2]

Answer:

Explanation:

1. Force between two charged ions: Electrical force

Electrical force of attraction exists between two charged ions due to constant flow of electrons occuring within their field of influence.

2. Ion made of two or more atoms of  different elements : Polyatomic ion

A polyatomic ion is made up of two or more different elements. Most radicals forms polyatomic ion e.g SO₄²⁻

3. Compound whose atoms form bonds  by transferring electrons : Ionic compound

Ionic compounds forms by the transfer of electrons from a less electronegativbe atom to a more electronegative one. This is in a bid for the atoms to achieve stability.

4. Smooth solid formed by repeating  patterns of ions, atoms, or molecules

: Crystal

A crystal is a unit of an atom which is made up of definite repeating patterns over a long range.

5. Chemical bond formed when electrons  are transferred: Ionic bonds

The bonds resulting from the transfer of electrons between two atoms is an ionic bond. An example is that between Na⁺ ions and Cl⁻ ioin in NaCl

6 0
3 years ago
Which of the following are examples of useful hydrocarbons?
kari74 [83]

Answer:

the most useful hydrocarbon is fuel.

Explanation:

some examples like: natural gases,coal,diesel fuel, kerosene etc.

7 0
2 years ago
The ionic charge of an element in Group 6A is 2–.<br><br> -True<br><br> -False
natita [175]

True. These ions are of a 2- charge. Oxygen is an example. It will form a 2- charge if ionize.  

4 0
3 years ago
The volume of a sample of a gas at 273 c is 200.0 l. if the volume is decreased to 100.0 l at constant pressure, what will be th
Lyrx [107]
It will also be halved... but the relationship is with Kelvin not c.  So 273 +273 = 546 K.  half of that is 273 K, then subtract 273... you get 0 degrees c
7 0
4 years ago
Please help! I really don’t understand it
chubhunter [2.5K]

Answer:

C. It makes sure there is a balance inside the body

Explanation:

Hope this helps

7 0
3 years ago
Read 2 more answers
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