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3 years ago

What are the properties of compounds, mixtures, solutions, and pure substances? please answer!

2 answers:

4 0

Mixtures – two or more substances that are not chemically combined<span> with each other and can be </span>separated<span> by physical means. The substances in a mixture retain their individual properties. Solutions – a special kind of mixture where one substance dissolves in another.</span>

Ainat [17]3 years ago

3 0

Compounds consist of elements that are chemically linked up together.
Their properties include...
color, order, melting point, boiling point, and of course their specific chemical properties

A mixture solution is, of course, something that has been mixed into said liquid, hence where it gets its name, huh.
Their properties include...
boiling point, melting point, composition, and lastly their uniform appearance

A pure substance is also known to be a chemical substance that consists of a constant composition and withholds the same properties throughout the given sample.
Their properties include...
type of molecule or atom said substance is composed of, purity of said substance, and like always, their boiling and melting points

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6.201cm+7.4cm+0.68 cm+12.0cm

zimovet [89]

If you want the answer is centimeters is it going to be:
26.281 cm
If it make it easier for you to solve add 6.201 and 7.4 which will equal 13.601. Then add .68 to 13.601 which equals 14.281. Last add 12 to 14.281 which equals 26.281.

Hope this helps.

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3 years ago

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Maurinko [17]

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3 years ago

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Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s).

pychu [463]

Answer:

26.110 grams of O2 produced.

Explanation:

Calculate the amount of moles in KClO3 by dividing the amount of grams given by the atomic weight of the substance.

To get the atomic weight: K = 39.098, Cl = 35.45, O = 15.999, and there are 3 molecules of Oxygen, so multiply 15.999 by three.

39.098 + 35.45 + (15.999 * 3) = 122.548.

66.7g / 122.548 atomic mass = 0.544 moles.

The ratio of moles of KClO3 to moles of O2 is 2 to 3.

$\frac{2}{3}$ = $\frac{0.544}{y}$

Cross multiply to get 1.632 = 2y. Y = 0.816, meaning 0.816 moles of O2 will be produced.

Convert this into grams by multiplying by the atomic weight of O2 (15.999 * 2 = 31.998).

0.816 * 31.998 = 26.110 grams of O2 produced.

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3 years ago

2. A convergent boundary is

wel

Answer:

A. When two boundary plates are moving slowly toward each other.

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3 years ago

How many moles of particles in ethanol

Neporo4naja [7]

Answer:

In this case, ethanol's molecular mass is 46 g/mol. This means that in 1 mol of ethanol, there are 46 g, thus the term molecular mass and molar mass are often used interchangeably. The same is true of a mole. A mole of anything is 6.022 x 1023 of that item

Explanation:

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4 years ago

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