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

Author Question: What is the hardness of quartz on the Mohs scale? a. 1 b. 4 c. 7 d. ... (Read 46 times)

TFauchery

  • Hero Member
  • *****
  • Posts: 500
on: Jul 28, 2018
What is the hardness of quartz on the Mohs scale?
 a. 1
  b. 4
  c. 7
  d. 10

Question 2

Which of the following ions would never form in chemical reactions?
 a. F2-
  b. Al3+
  c. O2-
  d. N3-


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

matt

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

a


TFauchery

  • Hero Member
  • *****
  • Posts: 500
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


matt

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Middle adulthood can bring large-scale changes in lifestyle and interests, as illustrated by this ph Middle adulthood can bring large-scale changes in lifestyle and interests, as illustrated by this ph
Common skin signs are often evidence of an illness or disorder. A scale is a thin, dry flake of ... Common skin signs are often evidence of an illness or disorder. A scale is a thin, dry flake of ...
Patients unable to stand may be weighed using a chair scale. Patients unable to stand may be weighed using a chair scale.
Schematic of a flow cytometer. The laser interacts with the cell in the quartz flow cell. Three ... Schematic of a flow cytometer. The laser interacts with the cell in the quartz flow cell. Three ...
The Effect of Using a Ratio Scale The Effect of Using a Ratio Scale
The pH scale: Acids, Bases, and Buffers and Body Fluids in Flux The pH scale: Acids, Bases, and Buffers and Body Fluids in Flux
Video: Introduction to Heart Attacks

For a complete list of videos, visit our video library