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Marysya12 [62]
2 years ago
8

Jack an investigator wants to prove that a certain suspect was present at the crime scene when the crime was committed. What kin

d of evidence should he look for
Chemistry
1 answer:
grin007 [14]2 years ago
5 0

Answer:

eye witnesses, dna, fingerprints, hair, time stamped photos/ videos

Explanation:

:)

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Hello, to answer your question. It is because all machines require a fuel or source to power it making it imperfect for using some source that may not be renewable.


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How can you use the periodic table to find the number of protons in one atom of an element?
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A is your answer.
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3 years ago
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The boiling point of methanol is 64 7°C. Its melting point is -976°C. At room temperature (-25°C), methanol is in which state?
marissa [1.9K]

At -25 °C, methanol, whose boiling point is 64.7 °C and its melting point is -97.6 °C, is in the liquid state.

The melting point is the temperature at which a substance passes from solid to liquid. Below the melting point, a substance is in the solid state. Above the melting point, a substance is in the liquid or gas state.

The boiling point is the temperature at which a substance passes from liquid to gas. Below the boiling point, a substance is solid or liquid. Above the boiling point, a substance is in the gas state.

At -25 °C, methanol is above the melting point (-97.6 °C) and below the boiling point (64.7 °C). Thus, it is in the liquid state.

At -25 °C, methanol, whose boiling point is 64.7 °C and its melting point is -97.6 °C, is in the liquid state.

You can learn more about the melting and boiling points here: brainly.com/question/5753603?referrer=searchResults

3 0
2 years ago
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nika2105 [10]
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Is O2 a element or a compound
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O2 is an element As it contains just one kind of atom, O2 is an element,
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