# data[].attributes.body
Tracy also had the ingredients needed to have hydrofluoric acid.

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Pat had the reactants needed to create the hydrofluoric acid.

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It is important because we would not notice the oxygen in the air because it is part of the air we breathe and we cannot see it.

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She could be using the calcium sulfate for sculpting, but it does not mean that she could have used it also for the robbery.

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She could have used all of the product at the crime scene, or left it behind.

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Tracy could have used the purified water to make the product or just have it at home to drink for other reasons, water is very common to have at home.

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Pat could have used all the substances at the crime scene, and left the rest behind so she would not incriminate herself by having them at her house.

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This could be the leftover substance after the fluoride and the calcium sulfate are combined as the hydrofluoric acid.

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The ca sulfate is the chemical left over anf this makes hydrofluric acis

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Tracy had the chemicals and the knowledge
to make the product. This makes her look guilty.

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Pat has access to the chemicals but he also needed these for his work.

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Oxygen was there but there was other chemicals used

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Oxygen might have been used but it doesn't have the odor that was present at the crime scene

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Pat is a sculptor and would need these chemicals for his projects.

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Tracy had access to the chemicals and knew how to use them because she was a chemist and this makes her look guilty.

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I thinl Tracy is the guilty one because she had the chemicals and was a chemist.

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These substances might not have been at his house because he had already used them in his sculpting projects.

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I don't think pat did it because he is a sculpter and the chemicals he used can also be used in sculpting.

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this doesn't help me figure out if Tracy did it. i think Pat stole from the museum.

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if Pat had these substances delivered to his house, he could have made the hydrofluoric acid with these substances. Pat is most likely the one who stole form the museum.

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this evidence card is not helpful because Pat and Tracy both had oxygen, so that doesn't help me with who did or didn't do anything.

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it would make sense why Pat would have this in his house(evidence card A). because the evidence did say he was in sculpting.

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Tracy might have not used the water to make hydrofluoric acid, she could have just used it to drink water. i don't understand why having water would mean that Tracy made hydrofluoric acid.

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Pat could have used these substances that aren't in his house at the crime scene and then got rid of the rest that were in his house because he didn't want to get caught.

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it could be pat. he could've used calcium sulfate. why is it in his house? what did he do with calcium sulfate? he could've mixed sulfuric acid and calcium acid to make hydrofluoric acid.

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it could be Tracy but at the same time it couldn't because this Evidence Card says that there wasn't any hydrofluoric acid or any other unusual substances in Tracy's house, but she could've got rid of the substances before the cops showed up. did she know the cops were coming? if she did she might have got rid of the substances before the cops showed up and it could be her. if Tracy didn't know then maybe it isn't her. it might be though.

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this eliminates pat from the suspect list because the police did not find any weird thing going on.

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Tracy might have had just some purified water, but that doesn't mean that there was more than just that! There could have been more than the water found to mix with fluoride to make hydrofluoric acid. Pat was just trying to be a sculpter!

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This evidence shows that Tracy could have done the crime because she ordered the materials needed to make the substance at the cxrime.

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This shows that pat could have done the crime because he ordered the material he needed to make the substance at the crime.

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This evidence is not helpful to me,

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i don't get how to do all of this

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If pat did not have the substances he ordered what happened to them, did he use them in the crime.

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Based on this pat did not do the crime because if he still has that he didn't make the HF, the substance made in his house is also used in sculpting , and he is a sculptor.

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Calcium Sulfate would be left over from a chemical reaction between sulfuric acid and calcium fluoride forming a product of hydrofluoric acid.

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Calcium Sulfate would be left over from a chemical reaction between sulfuric acid and calcium fluoride forming a product of hydrofluoric acid.

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It would help out the investigation so that we can write against the police.

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Based on this evidence Pat did not do it, he is a sculptor and the substances he ordered are used in sculpting.

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Tracy did it based on this evidence because she ordered the substances used to make HF but no unusual substances were found in her house, so where did they go, did she use them in the crime.

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Tracy did not do it based on this evidence because if she still has what she ordered she didn't make the hydrofluoric acid.

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This could just show that she used all the acid because the crime was already committed.

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Calcium sulfate is one of the results of sulfuric acid and calcium fluoride mixed together. The other result of calcium fluoride and sulfuric acid is hydrofluoric acid, which tells us that Pat could've made the hydrofluoric acid, took it to the museum, and left it there on purpose so the police wouldn't find anything.

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What does this evidence tell us about whether or not Tracy made the hydrofluoric acid?

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What does this evidence tell us about whether or not Pat made the hydrofluoric acid?

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How is oxygen related to the other substances in this case?

Why might the properties
of oxygen be important information in this case?

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What does this evidence tell us about why Pat might have calcium sulfate?

What does this evidence tell us about whether or not Pat made the hydrofluoric acid?

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Why does it matter that the police did not find any of these substances at Tracy’s house?

What does this evidence tell us about whether or not Tracy made the hydrofluoric acid?

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What does this evidence tell us about whether or not Tracy made the hydrofluoric acid?

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Why does it matter that the police did not find any of these substances at Pat’s house?

What does this evidence tell us
about whether or not Pat made the hydrofluoric acid?

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How is calcium sulfate related to sulfuric acid and calcium fluoride, the two substances that Pat ordered from the chemical supply company?

What does this evidence tell us about whether or not Pat made the hydrofluoric acid?