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

Author Question: Which of the features is seen on the surface of Europa? A) impact craters B) giant cracks C) ... (Read 97 times)

Metfan725

  • Hero Member
  • *****
  • Posts: 552
on: Jul 27, 2018
Which of the features is seen on the surface of Europa?
 
  A) impact craters
  B) giant cracks
  C) water ice
  D) all of these are seen

Question 2

The most common isotope of gold has atomic number 79 and atomic weight 197.
 
  How many protons and neutrons does the gold nucleus contain? Assuming the gold is electrically neutral, how many electrons does it have? If the gold is triply ionized, how many electrons does it have?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Hikerman221

  • Sr. Member
  • ****
  • Posts: 346
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

The most common isotope of gold contains 79 protons and 118 neutrons. If it is neutral, it also contains 79 electrons. If the gold is triply ionized instead, it is missing 3 electrons and so has only 76 electrons.


Metfan725

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Jul 27, 2018
Thank you!


Hikerman221

  • Sr. Member
  • ****
  • Posts: 346
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Volcanic plateaus (red) and impact basins (blue) dominate this topographic map of Mars Volcanic plateaus (red) and impact basins (blue) dominate this topographic map of Mars
Saturn and Its Outer, Giant Ring Saturn and Its Outer, Giant Ring
Raindrops release aerosols on impact Raindrops release aerosols on impact
Major features of Homo erectus include increased brain size, an angular vault, and cranial superstru Major features of Homo erectus include increased brain size, an angular vault, and cranial superstru
The xy plane is painted with a uniform surface charge density which is equal to 40 nC/m2 . ... The xy plane is painted with a uniform surface charge density which is equal to 40 nC/m2 . ...
A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temp A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temp
Video: Structures that affect circulation - heart and systolic/diastolic BP

For a complete list of videos, visit our video library