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 131 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
Excellent

FergA

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Methane combustion as an energy–yielding redox reaction. Methane combustion as an energy–yielding redox reaction.
The Configuration, Normal Pressures, and Oxygen Content of the Heart Chambers The Configuration, Normal Pressures, and Oxygen Content of the Heart Chambers
The Energy Yield of Fossil Fuels The Energy Yield of Fossil Fuels
When the exhaust is rich, the output of a zirconia oxygen sensor is above 450 mV. When the exhaust is rich, the output of a zirconia oxygen sensor is above 450 mV.
Oxygen Transport: The Roles of Hemoglobin and Myoglobin Oxygen Transport: The Roles of Hemoglobin and Myoglobin
Oxygen-binding curve for myoglobin Oxygen-binding curve for myoglobin
Video: Cellular slime mold life cycle Animation

For a complete list of videos, visit our video library