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 60 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
Great answer, keep it coming :)

recede

  • Member
  • Posts: 315
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Erythrocytes contain large amounts of the oxygen-transporting protein Erythrocytes contain large amounts of the oxygen-transporting protein
Sample Exercise Prescription for Weight Training: Intermediate Sample Exercise Prescription for Weight Training: Intermediate
Sample Student Externship Form Sample Student Externship Form
Quadratic Formula Quadratic Formula
Genes are composed of a sequence of nucleotides in a DNA molecule Genes are composed of a sequence of nucleotides in a DNA molecule
If 1.823 g of cobalt metal reacts with 0.495 g of oxygen gas, what is the empiri If 1.823 g of cobalt metal reacts with 0.495 g of oxygen gas, what is the empiri
Video: The life cycle of protein

For a complete list of videos, visit our video library