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maw [93]
3 years ago
9

HELPPP What method should you use to separate this sample of mixture?

Chemistry
1 answer:
kozerog [31]3 years ago
8 0

Answer:

The answer to your question is: D. Fractional distillation

Explanation:

A. Column chromatography  this method is use to separate mixtures base in its capacity to be absorbed.

B. Fractional crystallization  this method use the solubility of solutes in a solvent.

C. Simple distillation  is a method to separate 2 liquids based on the difference in their boiling points.

D. Fractional distillation  is a method used to separate a mixture of liquids which have their boiling points very close.

E. Paper chromatography is a method to separate a mixture based on their different rate of migration on a paper.

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The molar solubility of magnesium carbonate is 1.8 × 10–4 mol/l. What is ksp for this compound?
Serhud [2]

Answer:

3.2 × 10⁻⁸

Explanation:

Let's consider the solution of magnesium carbonate.

MgCO₃ ⇄ Mg²⁺(aq) + CO₃²⁻(aq)

We can relate the molar solubility (S) with the solubility product (Ksp) using an ICE chart.

         MgCO₃ ⇄ Mg²⁺(aq) + CO₃²⁻(aq)

I                             0                0

C                          +S              +S

E                            S                S

The Ksp is:

Ksp = [Mg²⁺] × [CO₃²⁻] = S × S = S² = (1.8 × 10⁻⁴)² = 3.2 × 10⁻⁸

4 0
4 years ago
Read 2 more answers
¿Cómo se escribe la fórmula molecular (orden de los iones)?
cluponka [151]

Answer:

A la izquierda el catión y a la derecha el anión.

Explanation:

¡Hola!

En este caso, y basado en las normas IUPAC para la escritura de las fórmulas moleculares, es necesario primero escribir el catión a la izquerda, seguido del anión a la derecha, tal y como se muestra en los siguientes ejemplos, recordando que el catión es el ion cargado positivamente y el anión, negativamente:

K^+Cl^-\\\\Ag_2^+(SO_4)^{2-}

Los cuales son cloruro de potasio y sulfato de plata respectivamente. También es necesario tener en cuenta que los metales tienden a ser cationes por su capacidad de perder electrones, mientras que los no metales a ganarlos y por ende resultar como aniones.

¡Un gusto ayudarte!

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3 years ago
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Well a compound is 2 or more different molecules together. So if you see a periodic table you will see the elements to see if they are the same or not.
3 0
3 years ago
Question 2
Pavel [41]
Tearing paper, Physical Change
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4 years ago
Which pair of kingdoms include organisms which are all multicellular?
blondinia [14]
The animal kingdom includes <span>multicellular organisms. Also the cells of the species in this kingdom have a nucleus but no chloroplasts or cell wall. </span>
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Other kingdom from which all organisms are multicellular is t<span>he plant kingdom. It includes all types of plants including mosses, flowering plants, and ferns. </span>
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