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

Author Question: Silicates are the most common mineral group and differences between some silicates are due to only ... (Read 27 times)

penza

  • Hero Member
  • *****
  • Posts: 1,022
on: Jul 16, 2018
Silicates are the most common mineral group and differences between some silicates are due to only slight variations in their compositions. Explain the conditions necessary for elements to substitute to occur for Si and Mg.
 
  What will be an ideal response?

Question 2

Recycling aluminum is particularly beneficial because it
 
  A) saves energy.
  B) creates jobs in the country that recycles.
  C) decreases the need to import virgin aluminum ore.
  D) saves energy, creates jobs, and decreases imports of virgin aluminum ore.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

komodo7

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 16, 2018
Answer to Question 1

Substitution of one element must be of comparable size to fit into the same site in crystal structure.
Al3+ swaps for Si4+ in silicate tetrahedron.
Charge differences must be accommodated.
Add other cations (positive charges); no longer quartz.
Mg2+ and Fe2+ are similar size and charge and swap readily in minerals such as olivine.

Answer to Question 2

D


penza

  • Member
  • Posts: 1,022
Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

smrtceo

  • Member
  • Posts: 344
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Common ancestry predicts where we should find vestigial limbs Common ancestry predicts where we should find vestigial limbs
A Listing of Repeat Units for 10 of the More Common Polymeric Materials A Listing of Repeat Units for 10 of the More Common Polymeric Materials
The ABO blood group antigens The ABO blood group antigens
Deoxynucleotides (top) have an OH group at the position in the deoxyribose molecule Deoxynucleotides (top) have an OH group at the position in the deoxyribose molecule
Incidence of the Ten Most Common Cancers Incidence of the Ten Most Common Cancers
Video: Elementary kinetics

For a complete list of videos, visit our video library