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Author Question: A sample is composed of 2.78 g of iron and 1.19 g of oxygen. The empirical formula is ________. ... (Read 21 times)

LCritchfi

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on: Aug 27, 2018
A sample is composed of 2.78 g of iron and 1.19 g of oxygen. The empirical formula is ________.
 
  A) FeO2
  B) Fe2O5
  C) Fe2O3
  D) FeO

Question 2

Essentially all of the mass of an atom is due to the
 
  A) protons.
  B) neutrons.
  C) nucleons.
  D) electrons.


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JaynaD87

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

C

Answer to Question 2

C


LCritchfi

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Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it

ttt030911

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Reply 3 on: Yesterday
Wow, this really help

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