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bearhunter [10]
3 years ago
12

Mike is conducting an experiment inside an Erlenmeyer flask, and he has the top of the flask sealed with a balloon to capture an

y gaseous products that may be produced. Is Mike's experimental setup an example of a closed, open, or isolated system
Chemistry
1 answer:
zhenek [66]3 years ago
5 0

Answer:

Closed system

Explanation:

In order to do this, let's remember the concepts of an open, closed and isolated system.

Open system: Any matter and heat can enter or leave the system.

Closed system: any matter cannot enter or leave the system, however heat can enter or leave the system.

Isolated system: neither matter nor heat can enter or leave the system.

Now, an open system cannot be, cause the flask is sealed at the top with a balloon, so matter cannot escape the system.

Now, in general terms, an erlenmeyer flask is not insulated to prevent that any heat or energy can be transfered, hence, the system, even with the balloon to prevent any escape of the gaseous product, it can still transfer heat or energy to the medium. This can be verified by touching the balloon or flask, therefore, is a closed system.

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Answer : The correct option is "Mixing the mixture with water, filtering out the insoluble solid, and then evaporating the water to isolate the soluble solid.

Explanation :

"The given mixture contains a soluble solid and an insoluble solid.

When water is added to this mixture, the soluble solid will get dissolved in water whereas the insoluble solid will remain as it is.

This will give us a heterogeneous mixture where we can see 2 distinct phases , one containing the dissolved solid and the other having undissolved solid.

In order to separate these 2 phases, we can use a simple filtration method.

When the mixture is filtered, we will get solution having soluble solid and the insoluble solid will remain on the filter paper.

This will separate the 2 solids.

To regenerate the dissolved solid, we can evaporate the water by heating it. This will give us back our original soluble solid.

Therefore, the only option that is consistent with this method is "Mixing the mixture with water, filtering out the insoluble solid, and then evaporating the water to isolate the soluble solid"

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3 years ago
Barium (Ba) has two valence electrons, and these electrons are located in the 6s subshell. Without using the periodic table, in
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Which chemical reaction is the fastest?
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C) drain cleaner fizzes up as it encounters blockages in a pipe

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A student has a cube that has a mass of 5.5g and a volume of 4.10 cm3. What substance does he have?
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As the distance between 2 objects increases, what happens to gravitational force?
cestrela7 [59]

Answer:

Gravitational force decreases

Explanation:

One of Newton's remarkable discoveries was the law of universal gravitation, according to which if two bodies have mass, when they are close to each other there is a force of attraction between them. Thus, for example, the Earth attracts the Moon and the Sun to the Earth. For our purposes, the important thing about this law is that it tells us, first of all, that the force between the bodies depends on the distance between them. It does not matter to have two bodies very close to each other that are very separate. The greater the distance between the bodies, the smaller the force between them, since as the distance between two bodies is greater, the smaller the effect that one exerts on the other.

Second, the law of universal gravitation tells us how the force of distance depends. Suppose two bodies are at a distance of one meter and the force has a certain value. If the distance between these same bodies increases twice, that is to 2 m, then the force decreases to a quarter. If the distance increases to triple, that is to 3 m, the force decreases to the ninth part, and so on.

The fourth part of the force is equal to 1/4; but 4 = 2², that is, 2 raised to power 2; So the fourth part is equal to 1/2.

The ninth part of the force is equal to 1/9; but 9 = 3², that is, 3 raised to power 2; So the ninth part is equal to 1 / 3², etc. Consequently: if the distance increases 2 times, the force decreases 1/2 times; if the distance increases 3 times, the force decreases 1 / 3² times; if the distance increases 4 times, the force decreases 1/4 times, and so on.

The latter is expressed by saying that the decrease in the value of the force is like the square of the distance. In abbreviated form, u<u>sing mathematical language the above is expressed by saying that force depends inversely proportional to the square of distance. Conversely it means that increasing distance decreases force</u>

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3 years ago
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