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bearhunter [10]
4 years ago
9

What is the simple and accurate way, other than density, to distinguish the organic phase from the aqueous phase in the experime

nt that you have performed?
Chemistry
1 answer:
Alona [7]4 years ago
7 0

Answer:

Addition of the little amount of the water

Explanation:

Other than density, the another method which can be used to distinguish between the organic phase from the aqueous phase is:

A little amount of the water is added to the separatory funnel and notice where the water droplets are going.

If top layer is the aqueous layer, water droplets mix with top layer, and disappear. If bottom layer is the aqueous layer, water droplets will pass through top layer so to mix with bottom layer. This motion can help to distinguish.

However, if it is difficult to track where water droplets go, keep the track of volume of layers: whichever the layer increases with addition of the water is aqueous layer.

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Salt water is considered a compound since water is H20 (conpound) and Salt with is NaCl.
4 0
4 years ago
The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 8.00 g of conden
algol13

Explanation:

It is known that heat (Q) required to change the phase of a given sample of mass m will be as follows.

               Q_{f} = mL_{f}    ........ (1)

where,    L_{f} = latent heat of fusion

Similarly,   Q_{v} = mL_{v}[/tex]  ....... (2)

where,     L_{v} = latent heat of vaporization

As it is known that value of latent heat of fusion of water is 334 J/g and latent heat of vaporization of water is 2260 J/g.

Hence, equating both the equations as follows.

          m_{condensation} \times L_{v} = m_{fusion} \times L_{f}

          m_{fusion} = \frac{m_{condensation} \times L_{v}}{L_{f}}      

                         = \frac{8 g \times 2260 J/g}{334 J/g}

                         = 54.13 g

Hence, we can conclude that 54.13 grams of ice will melt.      

7 0
4 years ago
Realice una historieta que resuma su comprensión acerca de la teoría atómica y los diferentes modelos atomicos que se
Tomtit [17]

Respuesta:

Los modelo atómicos han permitido representar el modo de funcionamiento de los átomos. A lo largo de la historia han surgido un numero de modelos atómicos diferentes incluyendo los modelos de Bohr, Thomson, Rutherford, Sommerfeld, Dalton y Schrödinger.

Explicación:

El modelo atómico propuesto por John Dalton (1808) demostró que las sustancias químicas reaccionan en proporciones fijas y cómo mediante su combinación se producen elementos diferentes. Dalton fue el primero en postular la existencia de elementos indivisibles llamados átomos. A continuación, Thomson (1904) desarrolló un modelo en el cual el átomo estaba compuesto por protones con carga positiva y electrones con carga negativa los cuales se incrustaban uniformemente dentro de este átomo, asemejándose a las pasas de uva de un budín. En 1911, Ernest Rutherford desarrolló un nuevo modelo donde la masa principal del átomo tenía carga positiva y se localizaban en el núcleo, mientras que los electrones con carga negativa se posicionaban en la región externa del átomo. Subsecuentemente, Niels Bohr (1913) represento el funcionamiento del átomo de hidrógeno mediante un protón inmóvil en el núcleo atómico y un electrón girando a su alrededor. El modelo atómico de Sommerfeld permitió generalizar el diagrama de Bohr a otros tipos de átomos mas allá del Hidrógeno, incluyendo diferentes niveles energéticos para cada átomo particular. El modelo de Schrödinger​ (1926) permitió corregir aquellas discordancias surgidas del modelo atómico de Bohr. Schrödinger incluyó diferentes niveles y subniveles de energía a los electrones e incorporó órbitas elípticas a su movimiento, con lo cual permitiendo predecir los efectos relativos de los campos magnético y eléctrico sobre el movimiento de los electrones.

4 0
3 years ago
Occurs when energy is added or removed
stepan [7]

Answer:

melting

Explanation:

one change of state happens when you add energy to the substance. This change of state is called melting. By adding energy to the molecules in a solid the molecules begin to move quicker and can break away from the other molecules.

5 0
3 years ago
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hichkok12 [17]

Answer:

refractors and reflectors

Explanation:

4 0
3 years ago
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