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natita [175]
3 years ago
12

Which of the following cycles does not involve living organisms?

Chemistry
2 answers:
Aneli [31]3 years ago
7 0
The correct answer is letter C. Rock Cycle. Living organisms involved in carbon cycle, oxygen cycle, and in nitrogen cycle. These are involved in the air that living organisms are taking in and out.
jok3333 [9.3K]3 years ago
6 0

Answer : Option C) Rock Cycle.

Explanation : Rock cycle is a basic concept in geology which deals with the time-consuming transitions that occurs through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. It does not involves living organisms in this cycle.

Rest all the other cycle involves living organisms, carbon cycle has indirect impact of humans on it as it deals with the photosynthesis and the metabolism activities.

Oxygen cycle deals with the circulation of the oxygen through various forms in the nature including humans.

Nitrogen cycle involves nitrifying bacteria which converts the atmospheric nitrogen into ammonia and then convert it to nitrites for the use of plants.

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Answer:

1367.7 g of ethylene glycol was added to the solution

Explanation:

In order to find out the mass of glycol we added, we apply the colligative property of lowering vapor pressure: ΔP = P° . Xm

ΔP = Vapor pressure of pure solvent (P°) - Vapor pressure of solution(P')

525.8 mmHg - 451 mmHg = 451 mmHg . Xm

74.8 mmHg / 451 mmHg = Xm → 0.166 (mole fraction of solute)

Xm = Mole fraction of solute / Moles of solute + Moles of solvent

We can determine the moles of solvent → 2000 g . 1  mol/18 g = 111.1 mol

(Notice we converted the 2kg of water to g)

0.166 = Moles of solute / Moles of solute + 111.1 moles of solvent

0.166 (Moles of solute + 111.1 moles of solvent) = Moles of solute

18.4 moles = Moles of solute - 0.166 moles of solute

18.4 = 0.834 moles of solute → Moles of solute = 18.4/0.834 = 22.06 moles

Let's convert the moles to mass → 62 g/mol . 22.06 mol = 1367.7 g

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