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Tcecarenko [31]
3 years ago
13

What are the two properties of the ink components that determine their movement along the chromatography paper/fabric (see Intro

duction)?
Chemistry
1 answer:
SVETLANKA909090 [29]3 years ago
8 0

Answer:

Solubility of the ink in the solvent

Component substances in the ink

Explanation:

Movement along the chromatography paper/fabric is determined by the solubility of the ink in the solvent and the component of the ink itself.

Chromatography is a separation technique used to separate complex mixtures.

The solution containing the mixture to be separated is spotted on a line near the end of the paper and then the paper is placed in a tank.

The solvent moves up the paper and it separates the mixtures in the spot into a number of different spots.

We can see that the solubility of the ink and component of the ink determines how they will be separated.

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Why is copper a popular mineral? Is it in danger of depletion? Use details to support your answer.
laila [671]

Answer:

yes it is a danger.Copper doesn't break down in the environment, leading to its accumulation in plants and animals. Absorption of some copper into the body is essential for human health. Acute industrial exposure to copper fumes, dusts or mists can result in chronic copper poisoning.Copper is a mineral and an element essential to our everyday lives. It is a major industrial metal because of its high ductility, malleability, thermal and electrical conductivity and resistance to corrosion. It is an essential nutrient in our daily diet.

7 0
3 years ago
In the equation:
Ksenya-84 [330]

Answer:

B) 16 g

Explanation:

  • 2H₂ + O₂ → 2H₂O

First we <u>convert 4 moles of O₂ into moles of H₂</u>, using the <em>stoichiometric coefficients of the balanced reaction</em>:

  • 4 mol O₂ * \frac{2molH_2}{1molO_2} = 8 mol H₂

Finally we <u>convert 8 moles of H₂ into grams</u>, using <em>its molar mass</em>:

  • 8 mol H₂ * 2 g/mol = 16 g

Thus, the correct answer is option B).

6 0
3 years ago
A legal right to use the property owned by someone else in a specified manner is known as an?
gogolik [260]

Answer:

I believe as sharing bit

4 0
2 years ago
Read 2 more answers
Which of the following is an example of behavioral variation?
ANTONII [103]

Answer: A, parrots eat seeds, fruit, and nuts, while hawks eat meat.

Explanation:

This option is more onto the behavioral and what the parrots did, while the other options were more on the parrots physical attributions.

<em>I hope this helped! :)</em>

5 0
3 years ago
Fill in the left side of this equilibrium constant equation for the reaction of benzoic acid (HC_6H_5CO_2) with water.
il63 [147K]

Answer:

[C₆H₅COO⁻][H₃O⁺]/[C₆H₅COOH] = Ka

Explanation:

The reaction of dissociation of the benzoic acid in water is given by the following equation:

C₆H₅-COOH + H₂O  ⇄  C₆H₅-COO⁻  +  H₃O⁺    (1)

The dissociation constant of an acid is the measure of the strength of an acid:

HA ⇄ A⁻ + H⁺        (2)

K_{a} = \frac{[A^{-}][H^{+}]}{[HA]}      (3)

<em>Where the dissociation constant of the acid (Ka) is equal to the ratio of the concentration of the dissociated forms of the acid, [A⁻][H⁺], and the concentration of the acid, [HA].     </em>

So, starting from the equations (2) and (3), the constant equation for the dissociation reaction of benzoic acid in water, of the equation (1), is:

K_{a} = \frac{[C_{6}H_{5}COO^{-}][H_{3}O^{+}]}{[C_{6}H_{5}COOH]}

I hope it helps you!          

6 0
3 years ago
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