CHEMISTRY HIGH SCHOOL

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as(1) an ionic compound
(2) a molecular compound
(3) a metal
(4) a nonmetal

Answers

Answer 1
Answer:

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.
Answer 2
Answer: Ionic compunds are able to conduct electricity when molten/in solution, but not when they are solid

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What is the difference between gram positive and gram negative?

Answers

one  is possitive and one is negatve

How many grams of oxygen can be created when you heat 200g of sodium chlorate

Answers

The balanced chemical reaction is:

2NaClO3 9= 2NaCl + 3O2
We are given the amount of sodium chlorate to heat. This will be the starting point of our calculations.

200 g NaClO3 (1 mol / 106.44 g) ( 3 mol O2 / 2 mol NaClO3) (32 g O2 / 1 mol O2) = 90.19 g O2

Click on the graphic to choose the correct relationship on the graph.R = diffusion rate of gas
MW = molecular weight

Answers

The graph of the relationship between the rate of diffusion and molar weight is shown by option A

What is the relationship between rate of diffusion and molar weight?

Graham's law of diffusion states that the rate of diffusion is inversely related to the square root of the molar mass of a gas.

According to this relationship, under the same circumstances, lighter molecules disperse more quickly than heavier ones. It is crucial to comprehend how gases behave and how their molecular makeup affects how they travel and are distributed.

Learn more about rate of diffusion:brainly.com/question/30697046

#SPJ3

Answer:

its the first graph

Explanation:

i got the answer correct using odyssey-ware

What is the percent composition by mass of nitrogen in NH4NO3 (gram-formula mass = 80.0 grams/mole)?(1) 17.5% (3) 52.5%
(2) 35.0% (4) 60.0%

Answers

Answer:

The correct option is (2) 35.0%

Explanation:

If we want to calculate the percent composition by mass of nitrogen in NH4NO3 we first need to calculate the mass of nitrogen in one mole of NH4NO3.

Because of the molecular form of NH4NO3 (it has 2 ''N'') we know that one mole of NH4NO3 contains 2 moles of N.

The molar mass of N (nitrogen) is 14.0067(g)/(mole)

This means that 1 mole of N contains 14.0067 grams of N.

Because we have 2 moles of N ⇒ (2moles).(14.0067(g)/(mole))=28.0134g

We know that in 1 mole of NH4NO3 we have 2 moles of N(28.0134 g of N).

To calculate the percent composition by mass of nitrogen we need to divide the mass of nitrogen in one mole of NH4NO3 by the mass of one mole of NH4NO3 and then multiply it by 100.

We know that in 1 mole of NH4NO3 there are 80.0 g of NH4NO3 (Because of the molar mass data) ⇒

((28.0134g)/(80.0g)).100=35.016 % ≅ 35.0%

We find that the percent composition by mass of nitrogen in NH4NO3 is 35.0%

We conclude that the correct option is (2) 35.0%
gram-formula=80.0grams/mole will be 35.0%

Desvribe all lab equipment that can be used to accurately measure the volume of a liquid

Answers

The items you would use to measure the volume of a liquid are:

1.) Water
2.) Sink
3.) Beaker 
4.) Cylinder
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While out on a hike, you find an unknown mineral. how would test the mineral to find out what it is?

Answers

You can find out what mineral it is when you bring it with you after you hike. You can bring it to a laboratory that specializes on mineral rocks for testing. They know what they should do to find out what it is. Hope this helps. Have a nice day. 
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