« previous next »

Author Question: Which equation correctly represents the reaction between silica and hydrofluoric acid? A) SiCl4 + ... (Read 93 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?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Natural defenses against stomach acid Natural defenses against stomach acid
Correctly completed check stub. Correctly completed check stub.
An agglutination inhibition reaction. Commercial kit materials would create an agglutination ... An agglutination inhibition reaction. Commercial kit materials would create an agglutination ...
Oxyanion reaction intermediate Oxyanion reaction intermediate
In an acid-base neutralization reaction, 33.74 mL of 0.500 M potassium hydroxide reacts with ... In an acid-base neutralization reaction, 33.74 mL of 0.500 M potassium hydroxide reacts with ...
What is the value for Kc for this reaction at 25°C? What is the value for Kc for this reaction at 25°C?
Video: Apicomplexan life cycle Animation

For a complete list of videos, visit our video library