This topic contains a solution. Click here to go to the answer

Author Question: What is a reduction? A) the gain of electrons B) the reduction of the number of electrons C) ... (Read 138 times)

awywial

  • Hero Member
  • *****
  • Posts: 577
What is a reduction?
 
  A) the gain of electrons
  B) the reduction of the number of electrons
  C) the loss of an electron from the valence shell
  D) the reaction of oxygen with a reductant
  E) the formation of red compounds in the presence of an oxidant

Question 2

A supersonic airplane heats up considerably when traveling through the air at speeds greater than the speed of sound. As a result, the airplane during supersonic flight is longer than when it is at rest on the ground.
 
  Offer an explanation for this length change from a submicroscopic perspective. A) The engines on the supersonic plane are so powerful that they cause the plane's metal skin to stretch during accelerations.
  B) Materials expand as they are heated.
  C) Atmospheric air molecules hit the supersonic plane at great velocities causing the atoms of the planes metal skin to start moving faster.
  D) Both A and B are correct.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

raenoj

  • Sr. Member
  • ****
  • Posts: 340
Answer to Question 1

A

Answer to Question 2

C




awywial

  • Member
  • Posts: 577
Reply 2 on: Aug 27, 2018
Excellent


gcook

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

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?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

For a complete list of videos, visit our video library