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 72 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?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ... Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ...
pH Scale - Weak Acid and their conjugate Base pH Scale - Weak Acid and their conjugate Base
Large-scale circulation systems produce global climate patterns Large-scale circulation systems produce global climate patterns
The Wong-Baker “Faces” pain rating scale The Wong-Baker “Faces” pain rating scale
Zone dimensions are not drawn to scale. Zone dimensions are not drawn to scale.
Video: Michaelis–Menten equation & Kinetic parameters

For a complete list of videos, visit our video library