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marysya [2.9K]
3 years ago
13

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as

Chemistry
2 answers:
inna [77]3 years ago
8 0

Answer: Option (1) is the correct answer.

Explanation:

An ionic compound is the compound which is composed of oppositely charged ions.

When an ionic compound is in a solid state, then oppositely charged ions are held together by strong electrostatic force of attraction. To break is force of attraction, high energy is required. That is why, ionic compounds do not conduct electricity as a solid.

Whereas in melted state, the ions are less tightly held and as a result they can move easily  from one place to another. Also in melted state, ionic compounds act as strong electrolyte. Hence, they are able to conduct electricity.

On the other hand, molecular compounds are poor conductors of electricity and non-metals do not conduct electricity. Whereas a metal is a good conductor of electricity even in its solid state.

Thus, we can conclude that a substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as an ionic compound.



sweet-ann [11.9K]3 years ago
5 0
Ionic compunds are able to conduct electricity when molten/in solution, but not when they are solid
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81.3%

Explanation:

Step 1:

The balanced equation for the reaction:

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Step 2:

Data obtained from the question. This includes:

Mass of propane (C3H8) = 470 g

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Percentage yield of water (H2O) =?

Step 3:

Determination of the mass of propane (C3H8) burned and the mass of water (H2O) produce from the balanced equation. This is illustrated below:

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From the balanced equation above,

44g of C3H8 was burned and 72g of H2O was produced.

Step 4:

Determination of the theoretical yield of H2O. This is illustrated below:

From the balanced equation above,

44g of C3H8 produced 72g of H2O.

Therefore, 470g of C3H8 will produce = (470x72)/44 = 769.09g of H2O.

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Step 5:

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Percentage yield = 81.3%

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