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Vaselesa [24]
3 years ago
12

What is the crystalline arrangement of atoms shown here?

Chemistry
1 answer:
mixer [17]3 years ago
4 0

Answer: Answer:

"The arrangement of atoms or ions in a crystal " is described by the terms body-centered cubic and face-centered cubic.

Explanation:

Face centred cubic system explains the crystal structure where an atom is present at each cubic corner of the crystal  and the centre of each cube face. Meaningfully, a closed packed plane where at each "face of the cube" atoms touch the alongside face diagonals.

Whereas in body centric cube system has the lattice point present at the 8 corners of  cell and an additional one at the center of the cell. Thus, both explains how the atom or ions are  placed or arranged in a crystal.

Explanation: Hope this helps :)

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De la siguiente reacción química Fe2O3 + 3 H2O → __Fe(OH)3 para que se cumpla el balanceo en ella, en el espacio qué coeficiente
MrRa [10]

Answer:

Para que se cumpla el balanceo en la reacción química, en el espacio se debe asignar 2 como coeficiente estequiométrico.

Explanation:

La ley de conservación de la materia establece que, dado que no se puede crear ni destruir ningún átomo en una reacción química, el número de átomos que están presentes en los reactivos debe ser igual al número de átomos presentes en los productos.

Luego, debes equilibrar la ecuación química. Para eso, primero debe mirar los subíndices al lado de cada átomo para encontrar el número de átomos en la ecuación. Si el mismo átomo aparece en más de una molécula, debes sumar sus cantidades.

Los coeficientes ubicados frente a cada molécula indican la cantidad de cada molécula para la reacción. Este coeficiente puede modificarse para equilibrar la ecuación, del mismo modo que nunca debe alterar los subíndices.

Al multiplicar el coeficiente mencionado por el subíndice, obtienes la cantidad de cada elemento presente en la reacción.

En este caso la reacción química es:

Fe₂O₃ + 3 H₂O ⇒ ____ Fe(OH)₃

Entonces, teniendo en cuenta todo lo anterior, se puede determinar la cantidad de elementos en cada lado de la ecuación:

  • Lado izquierdo: 2 hierro Fe, 6 oxígeno O y 6 hidrógenos H
  • Lado derecho: 1 hierro Fe, 3 oxígeno O y 3 hidrógenos H

Se puede observar que la reacción química no esta balanceada porque se tiene diferentes cantidades de cada elemento a cada lado de la reacción. Para equilibrarla, se comienza balanceando el hierro. Para eso, el coeficiente estequiométrico debe ser dos:

Fe₂O₃ + 3 H₂O ⇒ 2 Fe(OH)₃

Entonces:

  • Lado izquierdo: 2 hierro Fe, 6 oxígeno O y 6 hidrógenos H
  • Lado derecho: 2 hierro Fe, 6 oxígeno O y 6 hidrógenos H

Ahora, a cada lado de la reacción se tiene la misma cantidad de cada elemento, por lo que la reacción esta balanceada.

<u><em>Para que se cumpla el balanceo en la reacción química, en el espacio se debe asignar 2 como coeficiente estequiométrico.</em></u>

<u><em></em></u>

7 0
3 years ago
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5 0
3 years ago
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A sample of gas with an initial volume of 27.9 L at a pressure of 721 mmHg and a temperature of 309 K is compressed to a volume
sineoko [7]

Answer:

U will make p2 the subject since u already have all the remaining data

7 0
4 years ago
What is the molar mass for the compound feso4?
gogolik [260]
Molar mass for the compound feso4 is 152
6 0
3 years ago
Choose the aqueous solution with the highest vapor pressure. These are all solutions of nonvolatile solutes and you should assum
VashaNatasha [74]

Answer:

They all have about the same vapor pressure.

Explanation:

The elevation of the vapor pressure is related to the elevation of the boiling point: for higher vapor pressure, the liquid will boils at a low temperature.

When a nonvolatile compound is added to the liquid, the boiling temperature increases, in an effect called ebullioscopy, and that difference of temperature can be calculated by:

ΔT = K*W*i

Where K is a constant for the liquid, W is the molality, and i is the van't Hoff factor, which depends on the dissociation of the compound.

i = dissociated particles/total particles

For the molecules compounds given, the ideal van't Hoff factor is 1.

The molality can be calculated by:

W = n1/m2

Where n1 is the number of moles of the solute and m2 is the mass of the solvent. In this case, all the solutes have the same number of moles for the same volume of the solution because they have the same concentration, so the change in temperature is the same for all of them.

Then, they all have about the same vapor pressure.

7 0
3 years ago
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