This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A sample is composed of 2.78 g of iron and 1.19 g of oxygen. The empirical formula is ________. ... (Read 19 times)

LCritchfi

  • Hero Member
  • *****
  • Posts: 519
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.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

JaynaD87

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

C


LCritchfi

  • Member
  • Posts: 519
Reply 2 on: Aug 27, 2018
:D TYSM

cdmart10

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

The oxygen isotope curve illustrates the ratio between 16O and 18O. The oxygen isotope curve illustrates the ratio between 16O and 18O.
Apidium may be ancestral to all later higher primates and is reconstructed as looking like a small-b Apidium may be ancestral to all later higher primates and is reconstructed as looking like a small-b
The Phanerozoic Oxygen Isotope Record of Seawater The Phanerozoic Oxygen Isotope Record of Seawater
A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ... A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ...
Using the cursors on the oscilloscope, the high- and low-oxygen sensor values can be displayed on ... Using the cursors on the oscilloscope, the high- and low-oxygen sensor values can be displayed on ...
What is the [OH-] in a seawater sample if the pH is 8.65? What is the [OH-] in a seawater sample if the pH is 8.65?
Video: Proteins

For a complete list of videos, visit our video library