« previous next »

Author Question: Consider the following unbalanced half-reaction: MnO4- MnO2. The oxidation number of Mn changes ... (Read 174 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?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

The patient is undergoing an allergy skin test by receiving subdermal inoculations of allergens. Inf The patient is undergoing an allergy skin test by receiving subdermal inoculations of allergens. Inf
Estimated Number of New Sexually Transmitted Infections Estimated Number of New Sexually Transmitted Infections
The Cs-131 nuclide has a half-life of 30. years. After 139 years, about 3.0 grams remain. The ... The Cs-131 nuclide has a half-life of 30. years. After 139 years, about 3.0 grams remain. The ...
How much energy is evolved during the reaction of 53.4 g of Al, according to the reaction ... How much energy is evolved during the reaction of 53.4 g of Al, according to the reaction ...
The chemical reaction catalyzed by DNA polymerase I The chemical reaction catalyzed by DNA polymerase I
Number line (real numbers) Number line (real numbers)
Video: Pasteur's Experiment

For a complete list of videos, visit our video library