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lawyer [7]
2 years ago
13

PLS HELP GIVING BRAINLIEST AND 100 POINTS

Chemistry
1 answer:
kondor19780726 [428]2 years ago
4 0
  • Air temperature and air pressure both decrease

The air pressure is low at higher altitudes. The pressure decreases up the higher altitudes. Same with temperature, as we go up the higher altitudes the temperature decreases as molecules becomes more far apart.

altitude ↑     ||     pressure ↓

altitude ↑     ||    temperature ↓

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In the science fiction movie, The Abyss, a diver is able to breathe while his head is immersed in a specially prepared liquid pu
Klio2033 [76]

Answer:

Explanation:

This type of experiment was carried out in 1960s on rodents, it was partially successful but was perceived impractical and dangerous for humans,it is possible theoretically.

Oxygen is broken down or dissolves in a thin film of fluid in the alveoli, surprisingly in normal breathing liquid composed of dissolved oxygen is involved. Evidently respiratory gas must be able to dissolve in this liquid and in concentration required to keep the partial pressure necessary to power diffusion.

5 0
3 years ago
1) Ions are formed between positive or negative charge.
RSB [31]

Answer:

1. No 1 looks like a statement and not a question.

2.Ionic compounds are usually formed from the transfer of electrons from metals to Non metals. All others are Ionic compounds except HCl(Its a covalent compound).

3. The Formula would be K2S. Exchange of Radicals takes place. Sulphur has a -2 charge and potassium has a +1 charge. when they both exchange radicals... The compound is K2S.

4.Group 1 elements have only 1 electron in their outermost shell.

5. its charge will be +1 because it loses the 1 electron in its outermost shell.

6.Group 2 elements have 2electrons in their Valence shell.

7.Already answered. same as No 5.

8. Group 16;Also known as group 6. They have only 6 electrons in their outermost shell.

9.When they want to become stable... they acquire 2electrons to complete their octet... so they possess a -2 charge by forming an ion.

10. i)They form ions when Dissolve in solutions

ii) They are hard and brittle

iii) They have high boiling points

3 0
3 years ago
Determine the oxidation number of each element in these compounds or ions. (a) au2(seo4)3 (gold(iii) selenate) au = se = o = (b)
Stels [109]
<span>                                                    Au</span>₂(SeO₄)₃

                                         O = -2 × 4 = -8
                                             Se  =  + 6
So,
                                            (+6 - 8) = -2

Means (SeO₄) contains -2 charge, Now multiply -2 by 3
                                             
                                             -2 ₓ 3 = -6
Means,
                             Au₂ + (-6) = 0
               
                            Au₂  = +6
Or,
                            Au  =  6 / 2

                            Au  = +3
Result:
                            Au  =  +3
                            Se  =  +6
                            O   =  -2

                                                      Ni(CN)₂


Cyanide (CN⁻) contains -1 charge,
So,
                              N  =  -3
                              C  =  +2
Then,
                                         Ni + (-1)₂  =  0

                                               Ni - 2  =  0
Or,
                                                     Ni =  +2
Result:
                            N  =  -3
                            C  =  +2
                           Ni  =  +2




6 0
3 years ago
Identifying Processes of the Carbon Cycle
Mademuasel [1]

Answer:

They break down the plants and animals they eat.

Explanation:

Consumers are the organisms which feed on plants and animals for obtaining energy. The carbon which is present in plant body in the form of glucose which is made in the process of photosynthesis. When these plants are eaten by consumers, the carbon which present in plants are transferred into the animal's body. This carbon is removed from the body of consumer in the process of cellular respiration and again goes to the atmosphere.

4 0
3 years ago
Of the total base sequence in human DNA, what percentage codes for proteins? A) Nearly 50 percent
aliya0001 [1]

Answer:

The correct answer is B)About 5 percent

Explanation:

The approximate total size of the human nuclear genome is 3,200,000,000 base pairs. 1 to 1, 4% encode proteins, 24% are non-coding regions and the rest correspond to intergenic regions.

8 0
3 years ago
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