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Author Question: Explain why Mendeleev left gaps in his periodic table of the elements. What will be an ideal ... (Read 37 times)

nelaaney

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on: Aug 27, 2018
Explain why Mendeleev left gaps in his periodic table of the elements.
 
  What will be an ideal response?

Question 2

The minimum number of moles of oxygen needed to completely consume 4 moles of C3H8O is ________.
 
  2 C3H8O + 9 O2  6 CO2 + 8 H2O
  A) 4
  B) 9
  C) 13.5
  D) 18

Question 3

The term molar solubility of a salt refers to the molar concentration of one anion (or cation) formed in an aqueous, saturated solution of that salt.
 
  Indicate whether the statement is true or false


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Dnite

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

Mendeleev left gaps in his periodic table so that elements with similar properties could be grouped together. He correctly predicted that the gaps would correspond to elements that had not been discovered at that time.

Answer to Question 2

D

Answer to Question 3

TRUE


nelaaney

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Reply 2 on: Aug 27, 2018
Gracias!

cam1229

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

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