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erastovalidia [21]
3 years ago
6

HELP PLEASE NOW I GOT TUTORING AT 6:00 PLEASE HELP!!!!! THIS IS URGENT

Biology
1 answer:
Zinaida [17]3 years ago
4 0
It is B.Hope it helps :)

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Imagine these two elements, element A and element B are solids. The two elements are poured into a beaker and mixed. Illustrate
Kryger [21]

Chromatography is a simple technique in principle, it remains the most important method for the separation of mixtures into its components. It is quite versatile for it can be used to separate mixtures of solids.

Explanation:

  • The two elements of chromatography are the stationary phase and the mobile phase. There are many choices of stationary phases, some being alumina, silica, and even paper.  The mobile phase, in liquid chromatography, can also vary.  It is often either a solvent or a mixture of solvents and is often referred to as the eluant.
  • A careful choice of eluting solvent helps to make the separation more successful.  The mixture is placed on the stationary phase.  The eluant passes over the mixture and continues to pass through the stationary phase carrying along the components of the mixture.
  • Chromatography is used in industrial processes to purify chemicals, test for trace amounts of substances, separate chiral compounds and test products for quality control. Chromatography is the physical process by which complex mixtures are separated or analyzed.
  • Chromatography is based on the principle where molecules in mixture applied onto the surface or into the solid, and fluid stationary phase (stable phase) is separating from each other while moving with the aid of a mobile phase

3 0
3 years ago
What property do the following elements have in common? Sulfur, iodine, magnesium
Luba_88 [7]

Answer:

Same Phase at room temp

Explanation:

Here we have a metal and two nonmetals (sulfur and iodine).

They are all solid at room temperature. Metals form cations and are good conductors of electricity. They are not from the same family, therefore, they do not have the same number of valence electrons.

4 0
3 years ago
Antibiotic resistance in bacteria is the result of
evablogger [386]
The correct answer is c. Genetic Variation. Bacteria are very numerous, ad random mutation of bacterial DNA generates a wide variety of change, including resistance.
7 0
3 years ago
Read 2 more answers
Which of these methods is not safe for thawing foods?
Natasha_Volkova [10]
The answer to your question is c, in the microwave. 
hoped this helped you. 
5 0
3 years ago
What is an ecological system called that consists of all of its biotic and abiotic factors?
mestny [16]
I would say ecosystem.
3 0
3 years ago
Read 2 more answers
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