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

Author Question: What percentage of a molecular cloud's mass is interstellar dust? A) 1 B) 2 C) 28 D) 50 E) ... (Read 58 times)

SAVANNAHHOOPER23

  • Hero Member
  • *****
  • Posts: 542
on: Jul 27, 2018
What percentage of a molecular cloud's mass is interstellar dust?
 
  A) 1
  B) 2
  C) 28
  D) 50
  E) 1-50, depending on the mass of the molecular cloud

Question 2

Based on the frequency with which we see comets from Earth, astronomers estimate the total number of comets in the solar system to be
 
  A) 100 million.
  B) 1 billion.
  C) 10 billion.
  D) 100 billion.
  E) 1 trillion.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leahchrapun

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

E


SAVANNAHHOOPER23

  • Member
  • Posts: 542
Reply 2 on: Jul 27, 2018
Gracias!

cici

  • Member
  • Posts: 325
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Molecular features of homeotic genes and proteins Molecular features of homeotic genes and proteins
Cloud Cloud
A Coronal Mass Ejection A Coronal Mass Ejection
Relationships and dates divergence of living primate group based on molecular and DNA comparisons. Relationships and dates divergence of living primate group based on molecular and DNA comparisons.
Cloud Patterns Associated with Midlatitude Cyclone Cloud Patterns Associated with Midlatitude Cyclone
Gravitational Force Due to a Distribution of Mass Problem 1 Gravitational Force Due to a Distribution of Mass Problem 1
Video: Parathyroid hormone (bone resorption) & Calcitonin (bone deposition)

For a complete list of videos, visit our video library