Help with a chemistry problem?

You have been given a sample of an unknown

substance. You find out that it does not

dissolve in water, has a very high melting

point and conducts electricity when molten.

The substance is probably

1. sodium chloride.

2. a covalent compound

3. C8H18.

4. an ionic compound.

1 Answer

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  • 8 years ago
    Favorite Answer

    I would have to say 3 is the correct answer. It is octane and that does not dissolve in water. Octane is a non-polar molecule and only polar molecules dissolve in water.

    Source(s): college chemistry student
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