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Author Question: The ultimate source of radon in the environment is from the radioactive decay of naturally occurring ... (Read 93 times)

stephzh

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on: Aug 27, 2018
The ultimate source of radon in the environment is from the radioactive decay of naturally occurring
 
  A) uranium.
  B) xenon.
  C) thorium.
  D) polonium.

Question 2

The correct structure for benzene was proposed by ________ in 1865.
 
  A) Boyle
  B) Kekule
  C) Faraday
  D) Curie


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ong527

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

A

Answer to Question 2

B


stephzh

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Reply 2 on: Aug 27, 2018
:D TYSM

Joy Chen

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Reply 3 on: Yesterday
Gracias!

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