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maksim [4K]
2 years ago
12

1. How is a bicycle race like a chemical reaction? The Tour de France is one of the most famous bicycle races in the world. It i

s held from mid-July to early August every year. During the race, cyclists travel almost 4000 kilometers. At one stage of the race, riders must cross steep mountains with heights of 1900 meters or more. The riders need extra energy to ride through these steep mountains.
Chemistry
1 answer:
MrRa [10]2 years ago
4 0

During the riding of the steep mountain, the body needs more energy because going up consume more energy and oxygen due to additional effect of gravity on your momentum.

<h3>What is the effect of cycling?</h3>

Cycling is a good exercise as swimming, while cycling, happy hormones are released like dopamine and serotonin.

The primary forces that work while cycling are gravity, friction, rolling resistance, and air resistance.

Thus, During the riding of the steep mountain, the bod needs more energy because going up consume more energy and oxygen due to additional effect of gravity on your momentum.

Learn more about effect of cycling

brainly.com/question/26055886

#SPJ1

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Answer:

Correct answers: 2 and 3

Explanation:

1- correct would be: Isolation of ibuprofen is not dangerous, but it is necessary because only one enantiomer has effect on interaction with biologic <em>diana</em>

<em>2: Correct! This property of diastereomeric salts (differing solubilities) is really useful for the isolation of the original enantiomers</em>

<em>3: Correct! we can only observe their properties, like polirized light rotation or separation in an assimetric column for chromatography.</em>

4: correct would be: diastereomeric salts do not rotate light, they have lost the property of anantiomers that originated them

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3 years ago
Pyridine (c5h5n) is a particularly foul-smelling substance used in manufacturing pesticides and plastic resins. calculate the ph
zubka84 [21]

Answer is: ph value of pyridine solution is 9.1.

Chemical reaction: C₅H₅N + H₂O → C₅H₅NH⁺ + OH⁻.<span>
c(pyridine - C</span>₅H₅N) = 0.115M.<span>
Kb(C</span>₅H₅N) = 1.4·10⁻⁹.
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[</span>C₅H₅N] = 0.115 M - x.

Kb = [C₅H₅NH⁺] · [OH⁻] / [C₅H₅N].

1.4·10⁻⁹ = x² / (0.115 M -x)

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7 0
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2 years ago
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