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

Author Question: What is corundum? If it is not in the rare form described here, do we use it for anything? What ... (Read 17 times)

bobypop

  • Hero Member
  • *****
  • Posts: 539
on: Jul 16, 2018
What is corundum? If it is not in the rare form described here, do we use it for anything?
 
  What will be an ideal response?

Question 2

One mineral is held together by van der Waal's forces and the other is held together by metallic bonds. Which is stronger?
 
  A) They are equally strong.
  B) They are equally weak.
  C) The mineral held together by metallic bonds is stronger.
  D) The mineral held together by van der Waal's forces is weaker.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fraziera112

  • Sr. Member
  • ****
  • Posts: 356
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: a hard mineral, sandpaper

Answer to Question 2

Answer: C


bobypop

  • Member
  • Posts: 539
Reply 2 on: Jul 16, 2018
Gracias!

elyse44

  • Member
  • Posts: 319
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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.

Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
How to determine an equation in factored form from a graphed parabola How to determine an equation in factored form from a graphed parabola
Shaking. A form of coarse vibration to a muscle or muscle group. Shaking. A form of coarse vibration to a muscle or muscle group.
standard reduction potential (Eo), the greater the tendency of the oxidized form of a redox couple standard reduction potential (Eo), the greater the tendency of the oxidized form of a redox couple
How to sketch a quadratic equation that is in standard form (Question 1) How to sketch a quadratic equation that is in standard form (Question 1)
General model of the association of histones and DNA to form nucleosomes General model of the association of histones and DNA to form nucleosomes
Video: HDL (high density lipoprotein)

For a complete list of videos, visit our video library