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3 years ago

The lab assistant accidentally poured water in the spirit (alcohol). How would you help him/her to get back the spirit. Explain.

Chemistry

1 answer:

Reptile [31]3 years ago

6 0

The water and the spirit can be easily separated by a method called fractional distillation.

<u>Explanation:</u>

There are many ways of separating alcohol from water. The most common method is by heating. Water has a higher boiling point when compared to alcohol and the water can be easily evaporated into the air.
This method is called Fractional distillation. As it requires a rounded flash, a beaker, and a container. If the content is put under the heat for a certain degree celsius the water in the content is evaporated.
It is to be collected and connected to a container. At last, the alcohol and water are separated.

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2 years ago

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Que enuncia la ley de la conservación de la energia

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english:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time.

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2 years ago

What are some advantages and disadvantages to the acid rain management techniques?

mr_godi [17]

Disadvantages of acid rain:
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Of course you should do more studying on acid rain but these are the simple ones

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2 years ago

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A 46.9 gram sample of a substance has a volume of about 3.5 centimeters3. It is solid at a room temperature of 23ºC. Out of the

horrorfan [7]

Answer : (C) Hafnium is the most likely identity of the given substance.

Solution : Given,

Mass of given substance (m) = 46.9 g

Volume of given substance (V) = 3.5 $Cm^{3}$

First, find the Density of given substance.

Formula used :

$Density=\frac{\text{Mass of given substance}}{\text{Voume of given substance}}$

Now,put all the values in this formula, we get

$Density=\frac{46.9 g}{3.5 Cm^{3} }$ = 13.4 g/ $Cm^{3}$

So, we conclude that the density of given substance (13.4 g/ $Cm^{3}$ ) is approximately equal to the density of Mercury and Hafnium (13.53 and 13.31 g/ $Cm^{3}$ respectively).

According to the question the substance is solid at room temperature but Mercury is liquid at room temperature. So, Mercury is not identical to the given substance.

Another element i.e, Hafnium is the element whose density is approximately equal to the given substance and also solid at room temperature. And we know that the melting point of solid is high.

So, Hafnium is the most likely element which is the identity of the given substance.

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3 years ago

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Sodium hydroxide, NaOH, reacts with sulfuric acid, H,SO,, in a neutralization reaction to

RSB [31]

Answer:

10.6 grams is approximately 0.10 moles. So you would need about 0.10 moles of sulfuric acid. That converts to about 9.80 grams.

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2 years ago