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balandron [24]
3 years ago
11

What are the differences between an element, a compound, a homogeneous mixture, and a heterogeneous mixture?

Chemistry
1 answer:
mylen [45]3 years ago
8 0

Answer:

Visibly different substances

Explanation:

A substance consisting one type of atom. heterogeneous mixture: A mixture that consists of visibly different substances or phases. homogeneous mixture: A mixture that has the same uniform appearance and composition throughout its mass.

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<h2>Answer:  # of neutrons = 9</h2>

<h3>Explanation:</h3>

# of neutrons = mass number - atomic number

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<h3>∴ number of neutrons in an atom of oxygen of mass number 17, is 9.</h3>
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What volume of carbon dioxide is produced when 0.489 mol of calcium carbonate reacts completely according to the following react
Vilka [71]

Answer:

11.0L of carbon dioxide is produced

Explanation:

Balanced equation: CaCO_{3}(s)\rightarrow CaO(s)+CO_{2}(g)

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So, 0.489 mol of CaCO_{3} produces 0.489 mol of CO_{2}

Let's assume CO_{2} behaves ideally.

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4 0
3 years ago
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