« previous next »

Author Question: Which equation correctly represents the reaction between silica and hydrofluoric acid? A) SiCl4 + ... (Read 114 times)

shofmannx20

  • Hero Member
  • *****
  • Posts: 562
on: Aug 27, 2018
Which equation correctly represents the reaction between silica and hydrofluoric acid?
 
  A) SiCl4 + 4HF  SiF4 + 4HCl
  B) SiO2 + 6HF  H2SiF6 + 2H2O
  C) SiCl2 + 2HF  SiF2 + 2HCl
  D) SiH4 + 4HF  SiF4 + 4H2
  E) none of the above

Question 2

The formula weight of PbCO3 is ________ amu.
 
  A) 279.2
  B) 112.0
  C) 118.0
  D) 267.2
  E) 235.2


mcni194

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Conversion of pyruvate to acetyl CoA, the junction between glycolysis and the citric acid cycle. Conversion of pyruvate to acetyl CoA, the junction between glycolysis and the citric acid cycle.
Surfactant-tempalted mesostructured silica Surfactant-tempalted mesostructured silica
Pathways in biosynthesis of eicosanoids from arachidonic acid Pathways in biosynthesis of eicosanoids from arachidonic acid
The fate of carbon in the citric acid cycle The fate of carbon in the citric acid cycle
How to fully analyze the standard and factored form of a quadratic equation (Question 1) How to fully analyze the standard and factored form of a quadratic equation (Question 1)
Determine the enthalpy change of this reaction Determine the enthalpy change of this reaction
Video: What are the Parts of a Plant Cell?

For a complete list of videos, visit our video library