« previous next »

Author Question: Consider the following unbalanced half-reaction: MnO4- MnO2. The oxidation number of Mn changes ... (Read 164 times)

kamilo84

  • Sr. Member
  • ****
  • Posts: 495
on: Aug 27, 2018
Consider the following unbalanced half-reaction: MnO4-  MnO2. The oxidation number of Mn changes from ________, and the Mn is ________.
 
  A) +4 to +7; reduced
  B) +7 to +4; oxidized
  C) +4 to +7; oxidized
  D) +7 to +4; reduced

Question 2

What is the oxidation number of bismuth in Bi2O3?
 
  A) +1
  B) +2
  C) +3
  D) +6

Question 3

Calcium carbonate is NOT found in
 
  A) seashells.
  B) chalcopyrite.
  C) pearls.
  D) stalactites.


abctaiwan

  • Sr. Member
  • ****
  • Posts: 355
Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

C

Answer to Question 3

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Formation of a peptide bond by a condensation reaction. Formation of a peptide bond by a condensation reaction.
How to write any number in scientific notation How to write any number in scientific notation
The d-aminolevulinic acid syntheses reaction The d-aminolevulinic acid syntheses reaction
Mayan Number Mayan Number
Prove the argument using two column proof number 5 only Prove the argument using two column proof number 5 only
Witting Reaction Witting Reaction
Video: Bone elongation - processes at the epiphyseal plate

For a complete list of videos, visit our video library