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Mariulka [41]
3 years ago
10

The two main classes of mixtures are

Chemistry
2 answers:
Slav-nsk [51]3 years ago
4 0

Explanation:

Mixtures are the substances that contain two or more atoms mixed together in different composition.

There are two main classes of mixtures which are as follows.

Homogeneous mixtures - These are the mixtures in which solute particles are uniformly distributed into the solvent.

For example, NaCl when dissolved in water forms a homogeneous solution.

Heterogeneous mixture - These are the mixtures in which solute particles are non-uniformly distributed into the solvent.

For example, sand mixed in water is a  heterogeneous solution.

Vesnalui [34]3 years ago
3 0
Homogeneous or heterogeneous, Hope this helps!!
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what would be the final volume when 2.20 M solution is made from 25.0 mL of a 12.0 M solution? plzz show work
cupoosta [38]

Answer:

136.36 mL

Explanation:

Here we have to use the dilution formula

From C1V1= C2V2

Where;

C1= initial concentration of the solution= 12.0 M

C2= final concentration of the solution= 2.20 M

V1 = initial volume of the solution= 25.0 ml

V2= final volume of the solution= ?????

Then recall;

C1V1=C2V2

V2 = C1V1/C2

Substituting values from the parameters given;

V2= 12.0 × 25.0 / 2.20

V2= 136.36 mL

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3 years ago
How does the kinetic energy of solids liquids and gases compare?
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2 years ago
Cellulose and starch are examples of:
mixer [17]

Answer:

The choose (d)

d. polysaccharides

3 0
3 years ago
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Consider two processes: sublimation of I2(s) and melting of I2(s) (Note: the latter process can occur at the same temperature bu
AVprozaik [17]

Answer:

positive

positive

Explanation:

Entropy -

In a system, the randomness is measured by the term entropy .

Randomness basically refers as a form of energy that can not be used for any work.

The change in entropy is given by amount heat per change in temperature.

  • When solid is converted to gas entropy increases,

As the molecules in solid state are tightly packed and has more force of attraction between the molecules, but as it is converted to gas, the force of attraction between the molecule decreases and hence entropy increases.

So,

The particles of the substance , if are tightly held by strong force of attraction will decrease the entropy ,

And

If the particles are loosely held , the entropy will increase , i.e. , positive entropy .

Similar with solid converting to liquid , the entropy will increases , i.e. , positive entropy .

Hence ,

The correct sign of entropy for both the process is positive .

4 0
3 years ago
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How does density relate to the cold and warm air masses?
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Warmer  air   is   less  dense  than  cold air.As  air  warm  it  rises  while  the  cold  air  sink. Warmer  air  masses forces the  cooler  air to  move  which  causes  wind.  These  is  illustrated  when  you  open  a hot oven the  hotter  air  inside  the  oven  rises  into  cooler  air  outside  the  oven.
3 0
3 years ago
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