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lorasvet [3.4K]
3 years ago
8

Which of the following is a solution?

Chemistry
2 answers:
Leya [2.2K]3 years ago
8 0

Answer:brewed coffee

Explanation:A solution is a homogeneous mixture of two or more substances. A solution must have a solute ( a substance that can be dissolved or a soluble substance) and a solvent (a substance, mostly liquid , that can dissolve another substance)

For a substance to be dissolved it depends on its degree of solubility.

For our example coffee beans (solutes) are dissolved in hot water which is a solvent and it becomes a homogeneous mixture which is a brewed coffee ; in which you can no longer separate a solute from a solvent. A solution is in one phase which can be either liquid or solid or gas , one can't see any particles in a solution with their makes eyes.

Alika [10]3 years ago
5 0
I'm pretty sure brewed coffee :)


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If the gas in the piston above has a volume of 20.0 L at a temperature of 25 C what is the volume of that gas when it is heated
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Answer:

15.98 L

Explanation:

First, you need to find T1, T2, V1 and V2.

T1 = 25 C = 298.15 K (25C + 273.15K)

T2 = 100 C = 373.15 K (100C + 273.15K)

V1 = 20. L

V2 = ? (we are trying to find)

Next, rearrange to fit the formula

V2 = V1 x T1 / T2

Next, fill in with our numbers

V2 = 20. L x 298.15 K / 373.15 K

Do the math and you should get...

15.98 L

- If you need more help or futher explanation please let me know. I would be glad to help!

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