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

Author Question: One of the reasons that gold is a rare element is that: A) it has a very low atomic mass. B) it ... (Read 47 times)

pepyto

  • Hero Member
  • *****
  • Posts: 547
on: Jul 27, 2018
One of the reasons that gold is a rare element is that:
 
  A) it has a very low atomic mass.
  B) it has a very low atomic number.
  C) gold atoms were absorbed during supernova explosions.
  D) gold atoms are made only by short-lived nuclear reactions.

Question 2

In their attempt to gauge the true shape of our Galaxy, the Herschels concluded that:
 
  A) our Galaxy has a hexagonal shape.
  B) the Sun is the only luminous star in our Galaxy.
  C) the Sun and Earth are near the edge of our Galaxy.
  D) our Galaxy has some noticeable holes lacking stars around its edges.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

anoriega3

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


pepyto

  • Hero Member
  • *****
  • Posts: 547
Reply #2 on: Jul 27, 2018
Thank you!


anoriega3

  • Sr. Member
  • ****
  • Posts: 323
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

The Mass-Luminosity Relation The Mass-Luminosity Relation
Mass Exchange Between Close Binary Stars Mass Exchange Between Close Binary Stars
Air Mass Thunderstorms Air Mass Thunderstorms
The five skills of the element Collection of Information The five skills of the element Collection of Information
Mass Wasting Triggers Mass Wasting Triggers
You heat 3.952 g of a mixture of Fe3O4 and FeO to form 4.162 g Fe2O3. The mass of oxygen ... You heat 3.952 g of a mixture of Fe3O4 and FeO to form 4.162 g Fe2O3. The mass of oxygen ...
Video: Molecules, Membrane Permeability and Structure

For a complete list of videos, visit our video library