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Taya2010 [7]
3 years ago
14

Which method separates components of a mixture according to how quickly the particles travel through a medium?

Chemistry
2 answers:
LenaWriter [7]3 years ago
6 0

Taking into account its definition, the correct answer is option D) Chromatography.

Chromatography is a method that allows the separation, identification and determination of chemical components in complex mixtures. By means of a chromatography it is possible to separate analytes that are very similar to each other in terms of their physico-chemical properties.

For the separation to occur, the principle of selective retention is used, which consists of the different behavior of the components of a mixture on a specific support (such as paper, a gas, a liquid) and a flowing liquid or gaseous phase. through the bracket.

In other words, there is a stationary phase immobilized on a support and a mobile phase that will drag the sample through the stationary phase. During this process, each component of the sample will move according to its own physicochemical characteristics. The general concept will be that those components that prefer the stationary phase are more retained, while those that prefer the mobile phase will move faster.

In summary, the components of the sample are distributed between two phases of different nature, as a consequence of the speed variation that is established when being dragged by a mobile, liquid or gaseous phase, through a stationary, solid or liquid phase.

Finally, the correct answer is option D) Chromatography.

Learn more about chromatography: <u>brainly.com/question/15057878?referrer=searchResults</u>

Nuetrik [128]3 years ago
3 0
Chromatography is the separation of a mixture by passing it in solution or suspension or as a vapor through a medium in which the components move at different rates.
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Nail polish remover containing acetone was spilled in a room 7.2 m × 5.8 m × 3.9 m. Measurements indicated that 6,400 mg of acet
sergeinik [125]

Volume of room  = 7.2 m \times 5.8 m \times  3.9 m

= 162.864 m^{3}

Now, according to conversion factor, convert 6,400 mg to micrograms

Since, 1 mg is equal to 1000 microgram.

Therefore, 6,400 mg  = 6,400 \times 1000

= 6,400,000 micrograms of acetone.

To calculate concentration of acetone, divide volume and evaporated amount of acetone in micrograms.

Thus,

Concentration of acetone  = \frac{6,400,000 microgram}{162.864 m^{3}}

= 39296.5910 microgram per cubic meter or 3.92\times 10^{4} \mu g/m^{3}\simeq 4.0\times 10^{4} \mu g/m^{3}

Hence, concentration of acetone is equal to 4.0\times 10^{4} \mu g/m^{3}

7 0
3 years ago
Calculate the total amount of energy required in calories to convert 50.0 g of ice at 0.00 degrees Celsius to steam at 100. degr
r-ruslan [8.4K]

Answer:

HFusion*mass + Spec.Heat*mass*ΔT + HVap*mass

80cal/g*50.0g + 1.00cal/g°C*50.0g*(100°C-0°C) + 540cal/g*50g

3.60x10⁵cal

Explanation:

Using the HFusion we can find the heat needed to convert the ice to liquid water.

With specific heat capacity we can find the heat needed to increase the temperature of water from 0 to 100°C.

With HVap we can find the heat to convert the liquid water into steam.

The equations are:

<h3>HFusion*mass + Spec.Heat*mass*ΔT + HVap*mass</h3><h3 />

Computing the values:

<h3>80cal/g*50.0g + 1.00cal/g°C*50.0g*(100°C-0°C) + 540cal/g*50g</h3>

36000cal =

<h3>3.60x10⁵cal</h3>
8 0
3 years ago
How many moles of chromium are present in 13.7 grams of chromium metal? Give your answer to 3 decimal
Alex
7.834 i'm sorry if its wrong i might have done some wrong calculations 
6 0
4 years ago
What is another name for a Grasshopper?
Alchen [17]

Answer:

The scientific name of the grasshopper is Caelifera.

Explanation:

hope this helps.

3 0
3 years ago
Read 2 more answers
8. Which SI units would best measure your computer screen? Why would this unit be the best choice?
kirill115 [55]

The SI I would use is inches, because inches is a reasonable length for a computer. However, Centimeter is too short and yards is too long. That is why inches is great for measuring a computer with.

<u><em>Hope This Help</em></u>

<u><em>Please Give Me Brainiest </em></u>

6 0
4 years ago
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