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 59 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
:D TYSM

triiciiaa

  • Member
  • Posts: 349
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Metals reacting with oxidized oxygen Metals reacting with oxidized oxygen
CaCO3 with oxygen isotopes CaCO3 with oxygen isotopes
Silicon-oxygen tetrahedron Silicon-oxygen tetrahedron
6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ... 6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ...
At 34.5°C, oxygen gas expands from 34.5 L to 45.7 L against a constant pressure of 750 mmHg. ... At 34.5°C, oxygen gas expands from 34.5 L to 45.7 L against a constant pressure of 750 mmHg. ...
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
Video: Fertilization and Development

For a complete list of videos, visit our video library