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lina2011 [118]
3 years ago
10

Why vitamin A(retinol) transported by chylomicrons ?

Chemistry
1 answer:
OLga [1]3 years ago
4 0

Answer:

from the small intestine (RE = retinyl ester; ROH = ret- inol. CM = chylomicron remnant). is split at least one intact molecule of retinol, retinal.

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Carbonic acid undergoes decomposition reaction.  Decomposition reaction starts with one reactant and forms two or more products: AB⇒A+B. In this reaction, H2CO3 ⇒H2O + CO2.
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Which is the best description of a molecule?
Svet_ta [14]

Answer:

The third option "A molecule of a compound is composed of at least two types of atoms" is correct

Explanation:

This question isn't about molecules, it's about elements and compounds.

Elements are made of one and only one type of atoms, while compounds are made of more than one type of atoms.

(Molecules are just groups of atoms, it doesn't matter what they're made of)

5 0
2 years ago
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When limestone (solid ) is heated, it decomposes into lime (solid ) and carbon dioxide gas. This is an extremely useful industri
SVETLANKA909090 [29]

The given question is incomplete, the complete question is:

When limestone (solid CaCO3) is heated, it decomposes into lime (solid CaO) and carbon dioxide gas. This is an extremely useful industrial process of great antiquity, because powdered lime mixed with water is the basis for mortar and concrete — the lime absorbs CO2 from the air and turns back into hard, durable limestone.

Suppose some calcium carbonate is sealed into a limekiln of volume 850 L and heated to 740.0 C. When the amount of CaCO3 has stopped changing, it is found that 2.05 kg have disappeared.

Calculate the pressure equilibrium constant Kp this experiment suggests for the equilibrium between CaCO3 and CaO at 740.0 C. Round your answer to significant digits.

Answer:

The correct answer is 2.00.

Explanation:

Based on the given information, the pressure equilibrium constant or Kp is equivalent to pressure of carbon dioxide or PCO₂. The reaction taking place in the given case is:  

CaCO₃ (s) ⇄ CaO (s) + CO2 (g)

The molecular weight of CO2 is 44 g/mol and the molecular weight of CaCO₃ is 100 g/mol. The amount of CaCO₃ that got disappeared in the given case is 2.05 Kg or 2050 grams. Therefore, the amount of CO₂ is,  

2050 g CaCO₃ * (44 g CO2/100 g CaCO₃) = 902 g CO2

The pressure of CO2, which is equivalent to Kp can be determined by using the formula,  

P = nRT/V

Here V is the volume, which is 850 L, T is the temperature, which is 740 degree C or 1013 K, R is the rate constant, which is 0.0822 L.atm/K.mole

n is the no. of moles, which is equal to weight/molecular wt,  

n = 902 g/44 g/mol = 20.5 mole

Now putting the values we get,  

P = 20.5 mole * 0.0821 L.atm/K.mole * 1013 K / 850 L

P = 2.00 atm or Kp = 2.00

5 0
3 years ago
Which project provided evidence for the accelerated expansion of the universe?
ludmilkaskok [199]

The universe includes galaxies, the solar system, and planets. The accelerated expansion of the universe was provided by the Supernova Cosmology Project and High-Z Supernova Search Team. Thus, option B is correct.

<h3>What is Supernova Cosmology Project?</h3>

The Supernova Cosmology project in 1998, was to show the acceleration of the Universe's expansion. This project studied the acceleration rate of the universe that was expanding at a constant rate.

The Viking and Voyager missions were the first successful landing of spacecraft on the moon's surface. That didn't provide any information on the universe.

Therefore, option B. Supernova Cosmology Project provided evidence of the expansion.

Learn more about Supernova Cosmology Project here:

brainly.com/question/12534160

#SPJ1

7 0
2 years ago
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