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Author Question: The stratosphere and the troposphere account for ______________ of the mass of the atmosphere. a. ... (Read 24 times)

robinn137

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on: Jul 28, 2018
The stratosphere and the troposphere account for ______________ of the mass of the atmosphere.
 a. 80
  b. 90
  c. 99.9
  d. 78.1

Question 2

How many protons does Radon have?
 a. 6
  b. 101
  c. 31
  d. 103
  e. 86


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wshriver

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Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

e


robinn137

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Reply 2 on: Jul 28, 2018
Gracias!

kswal303

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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