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Author Question: What is the molecular formula for ozone? A) O B) O2 C) O3 D) ... (Read 20 times)

Caiter2013

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on: Jul 15, 2018
What is the molecular formula for ozone?
 
  A) O
  B) O2
  C) O3
  D) O4

Question 2

Which of the following gases was present in Earth's early atmosphere?
 
  A) Water vapor
  B) Carbon dioxide
  C) Hydrogen
  D) Methane
  E) All of these gases


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lkoler

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Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: E


Caiter2013

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Reply 2 on: Jul 15, 2018
:D TYSM

samiel-sayed

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Reply 3 on: Yesterday
Excellent

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