« previous next »

Author Question: The smallest object one can distinguish using the electron microscope is on the order of one ... (Read 75 times)

kaid0807

  • Hero Member
  • *****
  • Posts: 515
on: Jul 28, 2018
The smallest object one can distinguish using the electron microscope is on the order of one nanometer (1 nm = 109 m). How many atoms of gold are contained in a cube whose edge is 1 nm long? The atomic mass of gold is 197 and its density is 19.3 g/cm3.

Question 2

The heliocentric model of the solar system was developed by
 a. Brahe.
  b. Kepler.
  c. Copernicus.
  d. Newton.


adammoses97

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 28, 2018
Answer to Question 1

59 atoms

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

kaid0807

  • Hero Member
  • *****
  • Posts: 515
Reply #2 on: Jul 28, 2018
Thank you!


adammoses97

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

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?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

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?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Electron Microscope Electron Microscope
Electron Microscope Images of a Diatom Electron Microscope Images of a Diatom
Insects Under the Electron Microscope Insects Under the Electron Microscope
Visual Object Agnosia Without Prosopagnosia Visual Object Agnosia Without Prosopagnosia
Sample inventory order form. Sample inventory order form.
Metastasis Cancer Order Metastasis Cancer Order
Video: The Pressure Flow Model in a Plant

For a complete list of videos, visit our video library