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19 October, 06:29

Which of the following is a homogenous mixture of two or more pure substances?

A. water

B. air

C. alcohol

D. oxygen

#2: You run a chromatogram of inks belonging to three crime suspects and from a ransom note. The inks resolve into the following numbers of spots: suspect A = 2, suspect B = 4, suspect C = 3, note = 5.

Which suspect would you most likely bring in for questioning?

A. suspect A

B. suspect B

C. suspect C

D. none of the suspects

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Answers (1)
  1. 19 October, 06:37
    0
    1. The answer to this question would be air.

    Air contains oxygen, nitrogen, carbon dioxide so it was a mixed one. The other option is a compound (water, alcohol) or molecule (oxygen) so it's not a mixture.

    2. The answer to this question would be D. none of the suspects.

    Since the note is 5 spots so there is no match for the suspect. But if you looking for the most suspicious then it could be suspect B with 4 spot which was near 5
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