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

Author Question: Which of the following pairs has the same number valence electrons? A) magnesium and potassium ... (Read 102 times)

lunatika

  • Hero Member
  • *****
  • Posts: 548
on: Aug 27, 2018
Which of the following pairs has the same number valence electrons?
 
  A) magnesium and potassium
  B) lithium and calcium
  C) argon and xenon
  D) phosphorus and tellurium

Question 2

Why is it impractical to burn any fuel in such a way that no nitrogen oxides are formed as combustion products?
 
  A) All fuels contain nitrogen.
  B) Nitrogen oxides form wherever air is exposed to high temperatures.
  C) Much of the energy of combustion comes from the formation of nitrogen oxides.
  D) Plants have come to depend on the nitrogen oxides produced from combustion.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

LP

  • Sr. Member
  • ****
  • Posts: 302
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

B


lunatika

  • Hero Member
  • *****
  • Posts: 548
Reply #2 on: Aug 27, 2018
Thank you!


LP

  • Sr. Member
  • ****
  • Posts: 302
Reply #3 on: Aug 27, 2018
Always glad to help...


« previous next »
 

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

The frequency of competition according to the number of species involved. The frequency of competition according to the number of species involved.
A number of tree species can be interconnected by mycorrhizal fungi in the forests of British Columb A number of tree species can be interconnected by mycorrhizal fungi in the forests of British Columb
potassium potassium
The frequency of bipolar illness in members of monozygotic twin pairs and in first-degree relatives The frequency of bipolar illness in members of monozygotic twin pairs and in first-degree relatives
The potential involvement of colchicine in doubling the chromosome number The potential involvement of colchicine in doubling the chromosome number
Copy-number variants Copy-number variants
Video: Chemical Synapse Animation

For a complete list of videos, visit our video library