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siniylev [52]
2 years ago
15

What does redshift tell us about the object in the universe?(what is the relationship of the objects?) help me plsss

Chemistry
1 answer:
ki77a [65]2 years ago
5 0

Answer:

Bottom line: A redshift reveals how an object in space (star/planet/galaxy) is moving compared to us. It lets astronomers measure a distance for the most distant (and therefore oldest) objects in our universe.

Explanation:

A redshift reveals how an object is moving in space and enables astronomers to discover otherwise-invisible planets and the movements of galaxies, and to uncover the beginnings of our universe.

They use a property called a "redshift" to describe the motion of an objects moving away from each other in space. Redshift occurs when an object emitting electromagnetic radiation recedes from an observer. The light detected appears "redder" than it should be because it is shifted toward the "red" end of the spectrum.Because the location of spectral features usually shifts to longer wavelengths -- towards the red end of the spectrum -- astronomers refer to this as the redshift of a galaxy. Take a look for yourself at the appearance of some very distant, very fast-moving galaxies in the Hubble Ultra-Deep Field .

hoped this helped a brainlist would be nice :)

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Magnesium hydroxide Mg(OH)₂ is a weak base.

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Sodium hydroxide NaOH and potassium hydroxide KOH are hydroxides of metals from the first group in the periodic table so thy are strong bases.

As you go to the second group in the periodic table, the hydroxides will not dissociate as much as the hydroxides from the first group in the periodic table , so they will be weak bases. This is the case of magnesium hydroxide Mg(OH)₂.

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Empirical formula is defined as the formula in which atoms in a compound are present in simplest whole number ratios.

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Acetic acid having molecular formula C_2H_4O_2. To write the empirical formula, we divide each subscript by 2.

C_{2/2}H_{4/2}O_{2/2}=CH_2O

Hence, the empirical formula for acetic acid is CH_2O

  • <u>Option b:</u> Citric acid

Citric acid having molecular formula C_6H_8O_7. To write the empirical formula, we divide each subscript by 1.

C_{6/1}H_{8/1}O_{7/1}=C_6H_8O_7

Hence, the empirical formula for citric acid is C_6H_8O_7

  • <u>Option c:</u> Hydrazine

Hydrazine having molecular formula N_2H_4. To write the empirical formula, we divide each subscript by 2.

N_{2/2}H_{4/2}=NH_2

Hence, the empirical formula for hydrazine is NH_2

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Nicotine having molecular formula C_{10}H_{14}N_2. To write the empirical formula, we divide each subscript by 2.

C_{10/2}H_{14/2}N_{2/1}=C_5H_7N

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Butane having molecular formula C_{4}H_{10}. To write the empirical formula, we divide each subscript by 2.

C_{4/2}H_{10/2}=C_2H_5

Hence, the empirical formula for butane is C_2H_5

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