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Andre45 [30]
3 years ago
7

Characteristics of a mixture?

Chemistry
2 answers:
Dmitry_Shevchenko [17]3 years ago
8 0

Answer:

the substance mixture can be sperate by filtration, distillation, and freezing.

IrinaVladis [17]3 years ago
4 0
Characteristics of mixtures
The substances in a mixture can be separated using physical methods such as filtration, freezing, and distillation.
There is little or no energy change when a mixture forms (see Enthalpy of mixing).
Mixtures have variable compositions, while compounds have a fixed, definite formula.
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A gas with volume of 700.0 mL at STP (0.0 0C, 1.00 atm) is compressed to a volume of 200.0 mL and the temperature is increased t
tekilochka [14]

Answer:

393.1 KPa

Explanation:

Now we have to use the general gas equation;

P1V1/T1 = P2V2/T2

P1= initial pressure of the gas= 1.00atm

V1 = initial volume= 700.0 ml

T1= initial temperature= 0.0°C +273= 273K

V2= final volume= 200.0 ml

T2= final temperature =30.0°C +273= 303 K

P2= final pressure =????

Therefore;

P2= P1V1T2/ V2T1

P2= 1.00 × 700.0 × 303/ 200.0 × 273

P2= 3.88 atm

But

1 atm = 101.325 kilopascals

Therefore 3.88 atm = 3.88 × 101.325 kilopascals = 393.1 KPa

6 0
3 years ago
Which of the following is an example of a model? PV=nRT, Geographical map, I believe that aliens exist, all of the above.
aleksandrvk [35]

<u>Answer:</u> The correct answer is geographical map.

<u>Explanation:</u>

Model is defined as the three dimensional representation of a proposed structure in a smaller scale.

For the given options:

<u>Option 1:</u>  PV = nRT

This is a proposed law. This law is known as ideal gas law. A law is defined as the rule which defined a correct procedure. For any gas behaving ideally, this law is used.

<u>Option 2:</u> Geographical map

Map is defined as the diagrammatic representation of an area of land or sea which also shows physical features, roads, cities etc..

A 3-D model can be prepared for geographical map.

<u>Option 3:</u> I believe that aliens exist

This is a hypothetical statement. It is a smart guess by the means of set of assumptions and observations. For its validation, we need to conduct some experiments.

Hence, the correct answer is geographical map.

3 0
3 years ago
Read 2 more answers
To find out if the height from which a student drops a ball affects how high the ball bounces, the independent variable is the
N76 [4]

Answer:

The independent variable is the height of the ball that bounces.

4 0
3 years ago
I need help with 17,18,19,&amp; 21
valentinak56 [21]

Answer:

17. tie hair up

wear goggles

18. i don't know

19. you light it on the side of the box

20. it should be orange because that is the safest.

21. you turn down the electricity thing

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3 years ago
Anhydrous copper sulphate can be used in a test for water. What two things will happen when water is added to anhydrous copper s
Misha Larkins [42]

Answer:

thanks bro for helping me thanku so much

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