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 33 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

Chelseyj.hasty

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Physical findings of the skin indicative of substance abuse Physical findings of the skin indicative of substance abuse
Good body mechanics for sitting on chair while performing massage. A. Sit with back and head in ... Good body mechanics for sitting on chair while performing massage. A. Sit with back and head in ...
Older Adults Benefit from Good Nutrition and Physical Activity Older adults Older Adults Benefit from Good Nutrition and Physical Activity Older adults
Substance P assists the transmission of impulses across the synapse Substance P assists the transmission of impulses across the synapse
Concepts related to substance abuse Concepts related to substance abuse
Structures of the brain related to substance abuse Structures of the brain related to substance abuse
Video: Factors that increase metabolic rate and heat production

For a complete list of videos, visit our video library