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3 years ago

Which of the following is true about compounds?

Chemistry

1 answer:

Sergeu [11.5K]3 years ago

6 0

Answer:

4) They are substances.

Explanation:

Compounds are substances that are made up of two or more kind of atoms that are chemically bonded together.

The properties of a compound is distinct and different from those of the individual elements that combines to make it up.

What then is a substance?

Any matter be it solid, liquid or gas with a specific composition is a substance. For example, NaCl is common salt and its chemical properties are uniform in all parts but sea water is not a substance as it is made up of water, mineral salts, dissolved gases etc.

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<u>Given the following data:</u>

Mass of propane = 75.6 grams.

<u>Scientific data:</u>

The molar mass of propane = 44.1 g/mol.

To calculate the number of moles that are contained in the given mass of propane ( $C_3H_8$ ):

<h3>How to calculate the moles of a compound.</h3>

In this exercise, you're required to determine the number of moles of propane that are contained in the given sample:

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$Number\;of\;moles = \frac{mass}{molar\;mass}$

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Read more on number of moles here: brainly.com/question/3173452

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