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kirill115 [55]
3 years ago
7

What was a major factor leading to the erosion of

Chemistry
1 answer:
kykrilka [37]3 years ago
8 0
(2) Growing popularity of radio and motion pictures
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How do animal participate in the carbon and oxygen cycle?
FinnZ [79.3K]
<span>Respiration - a<span>nimals  take organic matter (sugars...) and oxygen and release carbon dioxide and water.
</span></span>Decomposition - when organic<span> matter </span>breaks down chemically into all the simple elements. <span>When animal dies all the </span>carbon and<span> </span>oxygen<span>,return to the soil and air during decomposition.</span>
7 0
3 years ago
KF is a strong electrolyte, &amp; HF is a weak electrolyte. How are they different?
Vitek1552 [10]

The strong electrolyte KF completely dissociates into K+ and F- ions when it dissolves in water. When the weak electrolyte HF dissolves in water, there are a few ions of H+ and F- present, but mostly dissolved HF molecules. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

7 0
3 years ago
How much energy is required when a 142.1 gram sample of aluminum goes from 25.5°C to 46°C? (the specific heat of aluminum is 0.9
vfiekz [6]

Answer:

2621.75 j heat is required to increase the temperature 25.5°C to 46°C.

Explanation:

Given data:

Mass of sample = 142.1 g

Initial temperature = 25.5°C

Final temperature = 46°C

Specific heat capacity of Al = 0.90 J/g.°C

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 46°C - 25.5°C

ΔT = 20.5°C

Q = 142.1 × 0.90 J/g.°C × 20.5°C

Q = 2621.75 j

Thus,  2621.75 j heat is required to increase the temperature 25.5°C to 46°C.

4 0
3 years ago
Which of these elements could gain one electron to form an ionic bond with potassium explain why
Svet_ta [14]

Answer:

<h3>Chlorine </h3>

It has 7 electrons in it last shell. it will gain one electron to complete its octet and become Cl-. The ionic bond of chlorine form with potassium is Kcl ( potassium chloride)

  • Phosphorus has 5 electrons in its last shell it need 3 more electron to stable .

  • Sulphur has 6 electron. it needs 2 electrons

  • Argon is already stable as it has 8 electrons in its last shell it will not gain or loose any electrons
7 0
3 years ago
3. Consider the following stereoisomers of isopropyl methacrylate. Provide the expected number of peaks, the integrations of tho
Ganezh [65]

Answer:

Check the explanation

Explanation:

When there are two molecules then these molecules are described as stereoisomers if they are comprised of the same atoms associated in the same sequence, but the atoms are situated differently in the space. The disparity between stereoisomers can only be observed when the molecules is considered in a three-dimensional arrangement.

Kindly check the attached image below to the step by step explanation to the question above.

3 0
3 years ago
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