Chemistry Middle School

-Where is
decantation used? Give
two example


class 6
who answers first will marked as a brainliest.

Answers

Answer 1

Decantation is a method used in several areas, including:

1. Winemaking - Decanting wine removes particles that have settled at the bottom of the bottle over time. This allows the wine to aerate and release its aromas.

2. Separating solids from liquids - Decanting involves pouring a liquid off from undissolved solid particles. For example, decanting is often used to separate clear supernatant liquid from sediment at the bottom of a test tube after centrifuging. This allows analysis or use of just the clear liquid portion.

3. Liquids of different densities - Decanting can be used to separate immiscible liquids of different densities. For example, a mixture of water (dense) and lighter petroleum ether can be decanted to separate into layers.

4. Filtration - Decanting essentially functions as a form of filtration, allowing the passage of liquid but not solid particles. It is a primitive filtration technique.

5. Removing froth - Decanting may be used to remove , froth or other debris that forms at the surface of a liquid. The clear liquid below can be decanted off, leaving the surface contaminants behind.

So in summary, decanting is useful for separating solids from liquids, liquids of different densities, filtration, removing surface as well as preparing wine for consumption. Let me know if you have any other questions!

Answer 2

Decantation can be used for the separation of mixtures of immiscible liquids or solid mixture.



Two examples :

1.obtaining clear water from muddy water

2.separation of cream and milk. Cream accelerates to the top of milk and hence a immiscible layer is formed which can be seperated

Related Questions

Imagine you made pancakes on a cold winter day. You accidentally left the syrup out in the cold and now it will not pour out. How will you make the syrup pour out? Explain why your method will work.

Answers

Answer:

To make the syrup pour out after it has thickened due to the cold temperature, you can use the following method:

Fill a large bowl with hot water.

Place the container of syrup, with the lid securely tightened, into the bowl of hot water.

Let the container sit in the hot water for a few minutes until the syrup starts to loosen up.

Once the syrup has softened, remove the container from the hot water and shake it vigorously to help loosen it up even more.

Finally, remove the lid and pour the syrup over your pancakes.

Explanation:

This method works because heat causes the viscosity of the syrup to decrease, making it less thick and easier to pour. When the syrup is exposed to hot water, the heat is transferred to the syrup, and its molecules begin to move more rapidly, leading to a reduction in viscosity. By shaking the container vigorously, you are further agitating the syrup and helping to break up any remaining clumps, making it easier to pour

Put it in a microwave safe container then heat it up then pour on your pancakes and enjoy!!

What needed to be present in marine mud to form fossil fuels?

Answers

Carbon and Hydrogen.

Answer:

Mostly decaying organisms are needed to present in marine mud to form fossil fuels.

Explanation: When organisms and plants died and sank to the bottom of swamps and oceans, brown soil-like materials called peat are formed. Over millions of years, the peat became covered with sand, clay and other minerals and the peat is converted into layers of sedimentary rocks. After a long time, different type of fossil fuels are formed.

When light enters and leaves the prism, its path is changes because the light is _____ at the boundary between the glass and the air

A. Absorbed

B. Diffracted

C. Reflected

D. Refracted

Answers

Answer:

Refracted

Explanation:

I just know :) (;

Answer :refracted cause thats physics my friend

A student is modeling the image that will be produced by a double concave len as shown.



Select the correct information from the drop down menus to describe the image created by the lens.

Answers

Answer:

Explanation:

i d k

The image will be virtual. The image will be upright. Compared to the original object, the image created will be reduced in size.

What is a double concave lens?

A double concave lens, also known as a biconcave lens, is a type of lens that is thinner at the center and thicker at the edges, causing light rays passing through it to diverge.

This lens can be identified by its two curved surfaces that bulge inward, towards the opposite side of the lens. It is used to correct myopia (nearsightedness) and can also be used as a simple magnifier.

Find out more on concave lens here: https://brainly.com/question/1280311

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-What is the
difference between
filtrate and residue?

class 6
please answer will be marked as brainlist

Answers

Answer:

During the process of filtering, the solids left behind after the process are the residue and the liquid that has passed the process of filtering is the filtrate

Explanation:

The key difference between filtrate and residue is that the filtrate is a fluid, whereas the residue is a solid present in a suspension.
In brief, the filtrate is a liquid that can pass through a filter. Therefore, it is what we get after filtering off a suspension. Residue, on the other hand, is the solid mass we get on the filter paper after filtering off a suspension. We usually use these terms when we talk about the analytical technique, filtration. Filtration is a separation technique. It can be biological, physical or mechanical separation.

What is Filtrate?
The filtrate is the fluid portion we can obtain after a filtration process. It is the fluid that passes through the filter paper we use for filtration. Filtration is an analytical technique we can use to separate fluid portion from the solid portion of a suspension.

However, depending on the size of the pores of the filter paper and the size of the particles present in the suspension, some fine particles may pass through the filter paper; therefore, we can observe some fine particles in the filtrate. In such cases, we say the filtrate is contaminated. Here, the separation is not complete. Although the filtrate is often a liquid, there are some occasions where the filtrate can be a gas or even supercritical fluid.

What is Residue?
The residue is the solid portion we can obtain after a filtration process. Initially, the solid is suspended in the solution that we are going to filter. The solid residue is trapped on the filter paper during the filtration. After pouring the solution completely through the filter paper, we can obtain the total solid portion, which was present in the solution.

We can use different methods to separate different components in mixtures. For instance, in physical filtration methods, large-sized solid mass remains on the filter; in biological filtration methods, we can obtain solids such as metabolites and different cell particulates.

What is the Difference Between Filtrate and Residue?
Filtrate and residue are the components we obtain after a filtration process. The key difference between filtrate and residue is that the filtrate is a fluid, whereas the residue is a solid present in a suspension. Filtration separates the two portions from each other and via further purification, we can obtain pure substances. Besides, a further difference between filtrate and residue is that the filtrate can be either a gas or a liquid, but the residue is always in the solid-state.
When considering the end products of a filtration technique, we can obtain the filtrate as a fluid contaminated with the fine solid particles, and we can obtain the residue as a solid which has some remaining fluid on the surface. For example, drinking water obtained from water filters, the serum of blood, etc. are some examples for filtrates, whereas crystals produced during chemical reactions that take place via physical filtration, metabolites obtained from biological filtration, etc. are examples for residue.

Summary - Filtrate vs Residue
In summary, the filtrate and residue are the components that we obtain after a filtration process. Wherein, the key difference between filtrate and residue is that the filtrate is a fluid, whereas the residue is a solid present in a suspension. A suspension contains these two portions together. Filtration separates the two portions from each other and via further purification, we can obtain pure substances.
———————————-
For Reference:

1. "Filtration." Wikipedia, Wikimedia Foundation, 18 Sept. 2019,

1. "FilterDiagram" By Wikiwayman at English Wikipedia (CC BY-SA 3.0) via Commons Wikimedia
2. "Filter FunnelApparatus" By Smokefoot - Own work (Public Domain) via Commons Wikinedia

I also attached an image for the difference between Filtration and Residue! Please check it out if you still don’t understand:)
Have a great day/night/morning wherever you are!! Goodluck!!!! :))))

The mass of Betelgeuse is about ___ times the mass of Vega

(This is not multiple choice.)

Answers

Betelgeuse is a red supergiant star located in the constellation Orion, while Vega is a main-sequence star located in the constellation Lyra. The mass of Betelgeuse is estimated to be about 20 times the mass of the Sun, while the mass of Vega is estimated to be about 2.1 times the mass of the Sun. Therefore, the mass of Betelgeuse is about 9.5 times the mass of Vega.

Therefore, the mass of Betelgeuse is about 17.634 kg/ 9.5 times the mass of Vega.

Vega is a main-sequence star located in the constellation Lyra. Betelgeuse is a red supergiant star located in the constellation Orion. The mass of Betelgeuse is observed to be about 20 times the mass of the Sun, while the mass of Vega is estimated to be about 2.1 times the mass of the Sun. Therefore, the mass of Betelgeuse is theoretically estimated to be around 9.5 times the mass of Vega.

Experimentally,

The mass of Betelgeuse is 2.188 x10^31 kg

The mass of Vega is 4.246 x 10^30 kg

Hence, the mass of Betelgeuse is about 17.634 kg/ 9.5 times the mass of Vega.

To learn more about Betelgeuse and Vega,

https://brainly.in/question/31136305

What is the radius of the white dwarf star?

a.) 1.003
b.) 1.246
c.) 1.0
d.) .0084
e.) .0053

Answers

Answer:

2700km is the mass of white dwarf star

Explanation:

please mark me Brainlist

The radius of a typical solar mass white-dwarf is about 7000km: i.e., about the same as the radius of the Earth.
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