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vitfil [10]
4 years ago
14

Why is it possible to use physical properties to separate a mixture

Chemistry
1 answer:
pishuonlain [190]4 years ago
7 0
Using salt, water, and oil, by adding the salt you have <span>eliminated the oil. then by boiling it the water evaporates, you take a funnel, </span>gather the water vapor, put it in a cup. and everything is separated! so it does <span>work.
 It is possible to separate a mixture because they are in pieces that are able for you to take away from the whole mixture. As for homogeneous mixtures, they can not separate. For example, kool-aid is a mixture you can not separate, mixing water and powder is impossible to separate when together.
</span><span>
</span>
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2 Select the correct answer. Which is a form of kinetic energy? OA gravitational energy OB. chemical energy OC. electrical energ
hichkok12 [17]

Answer:

sound

Explanation:

Kinetic energy = 1/2 m v^2    

  KE requires movement    

7 0
2 years ago
What are the problems of turbid water for aquatic plants?
jonny [76]

Answer:

  • Turbidity affects the growth rate of algae (micro-aquatic plants) and other aquatic plants in streams and lakes because increased turbidity causes a decrease in the amount of light for photosynthesis.
  • Turbidity can also increase water temperature because suspended particles absorb more heat.

High levels of turbidity can affect aquatic life in several ways.

  • Too much turbidity might make it difficult for plants to complete photosynthesis, which in turn affects the amount of dissolved oxygen.
  • Fish cannot see well in turbid water making finding food difficult.
  • High turbidity reduces the penetration of sunlight into water and can limit photosynthesis and hence the growth of aquatic plants.

Explanation:

Turbidity is the measure of relative clarity of a liquid. The higher the intensity of scattered light, the higher the turbidity. Material that causes water to be turbid include clay, silt, very tiny inorganic and organic matter, algae, dissolved colored organic compounds, and plankton and other microscopic organisms

3 0
4 years ago
What is the systematic name of the following compound FE2S3
Solnce55 [7]

Answer:

I think it is Iron (III) sulfide

Explanation:

6 0
3 years ago
How many moles of water are in 1.23 times 10^18 water molecules
Radda [10]

Answer:

<h3>The answer is 0.000002 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L}  \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{1.23\times  {10}^{18} }{6.02 \times  {10}^{23} }  \\  = 0.00002043...

We have the final answer as

<h3>0.000002 moles</h3>

Hope this helps you

7 0
3 years ago
A system of gas at low density has an initial pressure of 1.90 × 10 5 1.90×105 Pa and occupies a volume of 0.18 m³. The slow add
Bad White [126]

Answer:

ΔU = -6.2 × 10⁴ J

Explanation:

The system absorbs 965 J of heat, that is, q = 965 J.

The work (w) can be calculated using the following expression.

w = -P . ΔV

where,

P is the external pressure

ΔV is the change in the volume

w = - (1.90 × 10⁵ N/m²) × (0.51 m³ - 0.18 m³) = -6.3 × 10⁴ J

The change in the internal energy (ΔU) is:

ΔU = q + w = 965 J + (-6.3 × 10⁴ J) = -6.2 × 10⁴ J

8 0
3 years ago
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