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 68 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?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

A soil surface crust that includes nitrogen-fixing, soil-enriching cyanobacteria. A soil surface crust that includes nitrogen-fixing, soil-enriching cyanobacteria.
Comparative features of blood vessels. Comparative features of blood vessels.
Pseudostigmatidae is a family of tropical damselflies, known as helicopter damselflies, giant damsel Pseudostigmatidae is a family of tropical damselflies, known as helicopter damselflies, giant damsel
Cryptococcus neoformans giant cell. Cryptococcus neoformans giant cell.
Confirming an Extinction-Level Impact Site Confirming an Extinction-Level Impact Site
Migration of Surface Cyclones Relative to Rossby Waves Migration of Surface Cyclones Relative to Rossby Waves
Video: System organization - PPM system types (Somatic, Autonomic & Enteric) and Reflex arc types

For a complete list of videos, visit our video library