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Digiron [165]
2 years ago
15

Air is a mixture of many gases, primarily nitrogen, oxygen, and argon. Could distillation be used to separate air into its compo

nent gases? Explain your answer.
Biology
1 answer:
vladimir2022 [97]2 years ago
5 0
Yes. Air can be separated through fractional distillation. The air must be cooled to a liquid first. Considering nitrogen oxygen and argon all have different boiling points, the liquid air mixture can be heated very gently and carefully in a fractionating column. Each element will eventually vaporise and they can be condensed and collected at different points up the fractionating column because they each have different boiling points.
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If a magnet is attracted to a metal object what can you say about the pole of the magnet and the pole of the object?
Nikolay [14]

Answer:

A. The poles are opposite

Explanation:

Magnets are object that produce magnetic fields, which are regions of space that exert a forces on charged particles in motion or on other magnets.

Every magnet has 2 opposite poles, which are labelled by convention as North Pole and South Pole; the lines of the magnetic field of a magnet go out from the North Pole and go into the South Pole.

Magnetic poles always exist in pair: it means, every magnet always contains a North Pole and a South Pole. If a magnet is cut in a half, each half of the magnet will still have a North Pole and a South Pole.

Each pole exerts a force on another pole; in particular, we have:

- Like poles (north-north or south-south) repel each other

- Opposite poles (north-south) attract each other

In this problem, a magnet is attracted to a metal object: this means that the two poles must be of opposite polarity. Therefore, the correct option is

A. The poles are opposite

7 0
3 years ago
Which of these results is an advantage of the green transportation technology shown in the picture compared with gasoline techno
Thepotemich [5.8K]

Answer:

C. Prevents sir pollution

Explanation:

Because when cars a running they produce fumes which pollute our air. Also that is a car electric charger

3 0
3 years ago
Read 2 more answers
The sequence of subunits in a protein is most directly dependent on the
kumpel [21]

The sequence of sub units in a protein is most directly dependent on the DNA in the chromosomes in a cell

Answer: Option B

<u>Explanation:</u>

Any life events that takes place in a cell depends upon the central dogma of life that is the DNA getting transcribed into RNA and the RNA getting translated into protein, therefore we can conclude that the sequences of amino acids are based on the sequences of DNA that are present inside the chromosomes that are packed in a nucleus of a  cell.

3 0
3 years ago
Why do all food chains start with a producer? (in terms of energy transfer)
viktelen [127]
Because there always needs to be something that starts it off. Eg: If there was no grass, there would be no animals.
5 0
3 years ago
If a small droplet of ordinary fat molecules is suspended in water, the fat molecules form a "ball of spaghetti" with no particu
kolbaska11 [484]

Answer:

Option 1, a charged end and a noncharged end

Explanation:

Complete question

If a small droplet of ordinary fat is suspended in water, the fat molecules form a "ball of spaghetti" with no particular orientation. But if a droplet of phospholipid molecules is put in water, all the molecules point outward, toward the water. Phospholipids are forced into this orientation because phospholipids have _____

  1.  a charged end and a noncharged end
  2.  three fatty acid molecules, all pointing in different directions
  3.  two fatty acid molecules pointing in different directions
  4.  both a saturated fatty acid and an unsaturated fatty acid
  5.  two charged ends

Solution

The structure of phospholipids consists of the following groups and molecules –  

a) A glycerol molecule  

b) Fatty acids (2 in numbers) – It is hydrophobic as it is uncharged and non polar in nature

c) Phosphate group (with alcohol) – It is hydrophilic as it is negatively charged and polar in nature.  

When the phospholipids are placed in  water, the molecule rearranges itself in a way that the hydrophobic head face inside and the hydrophilic head face outside thereby forming micelles.

Hence, option 1 is correct

3 0
3 years ago
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