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Author Question: Elements in the same group of the periodic table typically have ________. A) similar mass numbers ... (Read 83 times)

j.rubin

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on: Aug 27, 2018
Elements in the same group of the periodic table typically have ________.
 
  A) similar mass numbers
  B) similar physical properties only
  C) similar chemical properties only
  D) similar atomic masses
  E) similar physical and chemical properties

Question 2

For the species in the reaction below, Hf is zero for ________. 2Co (s) + H2 (g) + 8PF3 (g)  2HCo(PF3)4 (l)
 
  A) Co (s)
  B) H2 (g)
  C) PF3 (g)
  D) HCo(PF3)4 (l)
  E) both Co(s) and H2 (g)

Question 3

A humectant is a moisturizing agent.
 
  Indicate whether the statement is true or false


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mohan

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

E

Answer to Question 2

E

Answer to Question 3

TRUE


j.rubin

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Reply 2 on: Aug 27, 2018
Excellent

softEldritch

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Reply 3 on: Yesterday
Wow, this really help

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