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Author Question: The most abundant rocks in Earth's crust are the a. sulfides. b. oxides. c. carbonates. d. ... (Read 35 times)

sdfghj

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on: Jul 28, 2018
The most abundant rocks in Earth's crust are the
 a. sulfides.
  b. oxides.
  c. carbonates.
  d. silicates.

Question 2

Ammonia, NH3, boils at a higher temperature than phosphine, PH3 . This is probably due to
 a. ammonia being more dense than PH3.
  b. ammonia having the lower formula mass.
  c. hydrogen bonding among the NH3 molecules.
  d. ammonia being ionic and phosphine being covalent.


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Bison

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

d

Answer to Question 2

c


sdfghj

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Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

peter

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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