« previous next »

Author Question: Magnesium burns brightly in the presence of oxygen. When magnesium reacts with oxygen, the compound ... (Read 130 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?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

insect's compound eye, revealing photoreceptor cells, support cells and pigment cells insect's compound eye, revealing photoreceptor cells, support cells and pigment cells
When the exhaust is lean, the output of a zirconia oxygen sensor is below 450 mV. When the exhaust is lean, the output of a zirconia oxygen sensor is below 450 mV.
When the propane is shut off, the oxygen sensor should read below 200 mV. When the propane is shut off, the oxygen sensor should read below 200 mV.
Glutathione reaction with compound (denoted RX) Glutathione reaction with compound (denoted RX)
Compound Angle Formulas Compound Angle Formulas
compound compound
Video: Sex-Linked Traits! How are eye colors inherited in fruit flies?

For a complete list of videos, visit our video library