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Author Question: Perfumes are A) pure substances. B) compounds. C) simple mixtures of compounds. D) complex ... (Read 180 times)

captainjonesify

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on: Aug 27, 2018
Perfumes are
 
  A) pure substances.
  B) compounds.
  C) simple mixtures of compounds.
  D) complex mixtures of compounds.

Question 2

Plants incorporate carbon as long they live. Once a plant dies, it takes how many years for 75 of the carbon-14 to decay (half-life of C-14 is 5730 years)?
 
  A) 573 yrs
  B) 2865 yrs
  C) 5730 yrs
  D) 11460 yrs


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dpost18

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Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

D


captainjonesify

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Reply #2 on: Aug 27, 2018
Both answers were spot on, thank you once again


dpost18

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Reply #3 on: Aug 27, 2018
Great! Please up vote :D


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