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

Author Question: Which of these gases is least abundant in our atmosphere? A) hydrogen B) nitrogen C) argon D) ... (Read 78 times)

P68T

  • Hero Member
  • *****
  • Posts: 509
on: Jul 27, 2018
Which of these gases is least abundant in our atmosphere?
 
  A) hydrogen
  B) nitrogen
  C) argon
  D) oxygen
  E) carbon dioxide

Question 2

Spectral lines are produced when an electron makes a transition from one energy state to another.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

joechoochoy

  • Sr. Member
  • ****
  • Posts: 306
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

TRUE


P68T

  • Member
  • Posts: 509
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

momolu

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Examples of hydrogen bonds Examples of hydrogen bonds
A Prototype Hydrogen Fuel Cell Car A Prototype Hydrogen Fuel Cell Car
Composition of the Atmosphere Composition of the Atmosphere
The nitrogen cycle "دورة النيتروجين" The nitrogen cycle "دورة النيتروجين"
Sun's composition of Gases. Sun's composition of Gases.
If the solubility of helium is 0.94 cc per 100 cc of blood at 1.00 atmosphere, w If the solubility of helium is 0.94 cc per 100 cc of blood at 1.00 atmosphere, w
Video: Exocytosis - secretion

For a complete list of videos, visit our video library