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

Author Question: If the crustal abundance of some substance is 5 and a good ore deposit contains 25, what is the ... (Read 35 times)

abc

  • Hero Member
  • *****
  • Posts: 543
on: Jul 15, 2018

If the crustal abundance of some substance is 5 and a good ore deposit contains 25, what is the
  concentration factor needed to economically mine this substance?
  a. 0.20
  b. 1
  c. 2
  d. 5
  e. 25



Question 2

What is the ratio of an element's abundance in an ore deposit to its average continental-crustal
  abundance?
  a. enrichment multiple
  b. concentration factor
  c. economic feasibility quotient
  d. use per capita
  e. Poisson's factor



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ashley I

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 15, 2018
Answer to Question 1

D

Answer to Question 2

B


abc

  • Member
  • Posts: 543
Reply 2 on: Jul 15, 2018
:D TYSM

aruss1303

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

(A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive (A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive
Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ... Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ...
A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water. A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water.
After the chemical exfoliation substance has been applied, wrap the two top sheets around the client ... After the chemical exfoliation substance has been applied, wrap the two top sheets around the client ...
Too Much Alcohol Costs You Good Nutrition Too Much Alcohol Costs You Good Nutrition
Biological control agent: a commercially raised parasitoid wasp about to deposit a fertilized egg in Biological control agent: a commercially raised parasitoid wasp about to deposit a fertilized egg in
Video: Wound Cultures

For a complete list of videos, visit our video library