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 118 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?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

First Camera Trap Photos of Rare Leopard in China First Camera Trap Photos of Rare Leopard in China
Mixing bacterial genotypes produces rare recombinants Mixing bacterial genotypes produces rare recombinants
A Mass-Loss Star A Mass-Loss Star
Mass spectrometry (MS) for Mass, Sequence, and Amino Acid Analyses of Purified Proteins Mass spectrometry (MS) for Mass, Sequence, and Amino Acid Analyses of Purified Proteins
The five skills of the element Analysis of Situation The five skills of the element Analysis of Situation
He element M forms the chloride MCl4 containing 75.0% Cl by mass. What is the atomic weight of ... He element M forms the chloride MCl4 containing 75.0% Cl by mass. What is the atomic weight of ...
Video: Introduction to Sickle Cell Anemia

For a complete list of videos, visit our video library