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

Author Question: 24.3 g of magnesium yield 40.3 g MgO upon combustion with oxygen. How much magnesium needs to be ... (Read 119 times)

DelorasTo

  • Hero Member
  • *****
  • Posts: 548
on: Aug 27, 2018
24.3 g of magnesium yield 40.3 g MgO upon combustion with oxygen. How much magnesium needs to be burned to yield 12.1 g MgO?
 
  A) 4.30 g
  B) 6.10 g
  C) 7.30 g
  D) 8.40 g

Question 2

Which of the following substances is not a necessary dietary mineral?
 
  A) CO32-
  B) SO42-
  C) PO43-
  D) Cl-
  E) K+

Question 3

Why is the formation of iron hydroxide, Fe , from and O not considered an oxidation-reduction reaction?
 
  A) The iron is only oxidized and nothing is reduced.
  B) The iron is only reduced, not oxidized.
  C) The ion is not changed during this chemical reaction.
  D) Iron can never be oxidized or reduced.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

abro1885

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

A

Answer to Question 3

C


DelorasTo

  • Member
  • Posts: 548
Reply 2 on: Aug 27, 2018
Great answer, keep it coming :)

diana chang

  • Member
  • Posts: 288
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

The Atmosphere’s Oxygen Came from PhotosyntheticOrganisms The Atmosphere’s Oxygen Came from PhotosyntheticOrganisms
The Phanerozoic Oxygen Isotope Record of Seawater The Phanerozoic Oxygen Isotope Record of Seawater
The waveform of a good oxygen sensor as displayed on a digital storage oscilloscope (DSO). Note ... The waveform of a good oxygen sensor as displayed on a digital storage oscilloscope (DSO). Note ...
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.
A teaspoon of milk of magnesia contains 12.0 mg of magnesium hydroxide A teaspoon of milk of magnesia contains 12.0 mg of magnesium hydroxide
Partial pressures (in mm Hg) for oxygen (red boxes) and carbon dioxide (blue boxes) in the atmospher Partial pressures (in mm Hg) for oxygen (red boxes) and carbon dioxide (blue boxes) in the atmospher
Video: Origin of organelles Animation

For a complete list of videos, visit our video library