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 76 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?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

The Scale of Life The Scale of Life
Pitting Edema Grading Scale Pitting Edema Grading Scale
Solar particles interact with Earth's magnetosphere. Sizes not to scale. Solar particles interact with Earth's magnetosphere. Sizes not to scale.
pH Scale pH Scale
Models of some representative proteins drawn to a common scale Models of some representative proteins drawn to a common 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 ...
Video: How does asthma work?And How do you treat asthma?

For a complete list of videos, visit our video library