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jarptica [38.1K]
3 years ago
15

4. What type of evidence do you think would be most difficult to collect

Chemistry
2 answers:
Tanzania [10]3 years ago
7 0

Answer:

The type of evidence that is more difficult to collect is evidence known as trace, for example, fibers, hair, or signs of dirt.

Explanation:

For the collection of this type of evidence, specialized equipment such as special vacuum cleaners, tweezers, etc. are used, all with the purpose of carrying out the collection of trace evidence. This type of evidence is characterized by being very difficult to find.

mars1129 [50]3 years ago
3 0

I think it is trace evidence since it is really small and hard to find.

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Answer:

136.33 million mi

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1.5 astronomical units (AU)

Explanation:

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3 years ago
The reaction of aluminum with chlorine gas is shown.
mr Goodwill [35]

Answer:

See below

Explanation:

The equation shows    Al / Cl  = 2/3      or    3/2 Al = Cl

                                                                        3/2(20) = 30 Cl atoms needed

The equation shows a one-to-one relationship between Al and AlCl3

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2 years ago
Mr. Gordon's science students are studying scale models of the Sun-Earth-Moon system. Mr. Gordon is using this model to show his
4vir4ik [10]
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3 years ago
When you walk up to any substance, you can categorize the substance as a solid, liquid, or gas. You could further categorize the
natima [27]

Answer and Explanation:

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  1. <em>mass</em><em> (in grams)</em>
  2. <em>Volume </em><em>(in millilitres or litres)</em>
  3. <em>Moles </em><em>(mol) </em>

Inter-conversion of units is allowed based on defined units and constituent of the substance.

I believe this explanation would be helpful and easy to follow.

8 0
3 years ago
1. Amy's science teacher shows her class a model of an atom. Why is a model useful for studying atoms?
trapecia [35]

Answer:

The parts of an atom cannot be directly observed.

Explanation:

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As a result of this, models suffice in explaining the parts of an atom. Hence the answer.

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3 years ago
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