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

Author Question: Why are elements with even numbers of protons more abundant, on average, than elements with odd ... (Read 25 times)

P68T

  • Hero Member
  • *****
  • Posts: 509
Why are elements with even numbers of protons more abundant, on average, than elements with odd numbers of protons?
 
  A) because when elements split in a fission reaction, they prefer to split with all the protons paired
  B) because elements are mainly made in fusion reactions with hydrogen nuclei
  C) because elements are mainly made in fusion reactions with helium nuclei
  D) There's no explanation; it's something of a mystery to be explained or it may be a coincidence.

Question 2

Why is the night sky dark?
 
  A) Dark matter obscures light from distant objects.
  B) The dust clouds in interstellar space block the light.
  C) The universe has a physical edge, beyond which there is nothing.
  D) The universe is finite in age.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cswans24

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

C

Answer to Question 2

D





 

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

For a complete list of videos, visit our video library