« previous next »

Author Question: Magnesium burns brightly in the presence of oxygen. When magnesium reacts with oxygen, the compound ... (Read 218 times)

sammy

  • Hero Member
  • *****
  • Posts: 818
on: Aug 27, 2018
Magnesium burns brightly in the presence of oxygen. When magnesium reacts with oxygen, the compound formed is
 
  A) MgO.
  B) MgO3.
  C) Mg3O.
  D) Mg4O4.

Question 2

Which of the following statements about technologically important elements is true?
 
  A) China has a virtual monopoly on the rare earth metals.
  B) The U.S. still has large deposits of high-grade ores.
  C) It requires more energy to extract these metals from high-grade ores than from low-grade ores.
  D) The U.S. and other industrial nations are nearly 100 self-sufficient for these metals.


sokh

  • Sr. Member
  • ****
  • Posts: 357
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

insect's compound eye, revealing photoreceptor cells, support cells and pigment cells insect's compound eye, revealing photoreceptor cells, support cells and pigment cells
Rule of Nine for burns. Rule of Nine for burns.
Measuring Oxygen Saturation Measuring Oxygen Saturation
The flammable range consists of the concentration of fuel that will burn in atmospheric oxygen—the ... The flammable range consists of the concentration of fuel that will burn in atmospheric oxygen—the ...
In 1974 a UC Berkeley group fired an oxygen nucleus at a californium target. Giv In 1974 a UC Berkeley group fired an oxygen nucleus at a californium target. Giv
Classification of Burns by Depth Classification of Burns by Depth
Video: Proteins

For a complete list of videos, visit our video library