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Author Question: Perhaps the greatest triumph of Mendeleev's periodic table was A) the use of rows and columns to ... (Read 92 times)

moongchi

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on: Aug 27, 2018
Perhaps the greatest triumph of Mendeleev's periodic table was
 
  A) the use of rows and columns to organize the elements.
  B) the ability to predict electron configurations of elements.
  C) the use of atomic numbers as an organizing criterion.
  D) the prediction of the existence of undiscovered elements.

Question 2

Which contains more carbon?
 
  A) 24 g methane
  B) 140 g sodium carbonate
  C) 40 g carbon monoxide
  D) 15 g octane, C8H18


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fffftttt

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

D

Answer to Question 2

A


moongchi

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Reply 2 on: Aug 27, 2018
Gracias!

bigcheese9

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Reply 3 on: Yesterday
Excellent

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