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Iteru [2.4K]
3 years ago
15

What are the four classifications of matter?of those four, which two are pure substances?

Chemistry
1 answer:
Mademuasel [1]3 years ago
7 0

I believe the four classifications of matter would be:

- element

- compound

- homogenous mixture

- heterogeneous mixture


And then the two pure substances would be element and compound.

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How many moles of gas sample are 5.0 L container at 373K and 203kPa
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For the purpose we will here use t<span>he ideal gas law:

p</span>×V=n×R×<span>T

V= </span><span>5.0 L

T= </span><span>373K

p= </span><span>203kPa
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R is </span> universal gas constant, and its value is 8.314 J/mol×<span>K
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Now when we have all necessary date we can calculate the number of moles:

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Which equation represents the combined gas law?
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Explanation:

Given data

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Since we are dealing with an ideal gas, we can calculate the final volume using Boyle's law.

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6 0
4 years ago
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