« previous next »

Author Question: Critique the following statement made by a student looking at a TEM image of dolomite. The TEM ... (Read 56 times)

evelyn o bentley

  • Hero Member
  • *****
  • Posts: 564
on: Jul 16, 2018
Critique the following statement made by a student looking at a TEM image of dolomite.
 
  The TEM image shows regular patterns of small dots, large dots, and tiny dots. The formula for dolomite is CaMgCO32. I think the large dots must be the carbonate groups.
 
  A) The student is correct.
  B) The student is probably correct because four atoms will make a larger mark than one atom.
  C) The student is probably incorrect because the single metal atoms have a denser arrangement of electrons than the carbonate group.
  D) The student is incorrect because the image must not be dolomite. Since there are four types of atoms, the TEM for dolomite should have four sizes of dots.

Question 2

Why does the silica tetrahedron bond with one or more ions with a negative charge?
 
  What will be an ideal response?

Question 3

You find a rock and you think the mineral makeup is calcite. What evidence would indicate this?
 
  A) It is hard, therefore it is calcite.
  B) It breaks into 6-sided pieces, therefore it is calcite.
  C) It is pink, therefore it is calcite.
  D) It is very heavy, therefore it is calcite.


scikid

  • Sr. Member
  • ****
  • Posts: 300
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Beautifully done Thanks

Answer to Question 3

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

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.

Image of a flower petal. Image of a flower petal.
Cystostomy. An artificial opening is made through the urinary bladder wall during this procedure. As Cystostomy. An artificial opening is made through the urinary bladder wall during this procedure. As
Nursing student will find it funny Nursing student will find it funny
Midsagittal image of the head on an MRI scan Midsagittal image of the head on an MRI scan
Two lymphocytes that are reactive in a 19-year-old college student with infectious mononucleosis. ... Two lymphocytes that are reactive in a 19-year-old college student with infectious mononucleosis. ...
The Retinal Image The Retinal Image
Video: Pressure Flow Model Animation

For a complete list of videos, visit our video library