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

Author Question: Tetraboric acid, H2B4O7, is prepared by heating boric acid, H3BO3 (a condensation reaction involving ... (Read 57 times)

fnuegbu

  • Hero Member
  • *****
  • Posts: 539
on: Aug 27, 2018
Tetraboric acid, H2B4O7, is prepared by heating boric acid, H3BO3 (a condensation reaction involving water loss). If 400.0 mmol H3BO3 are used, what mass (g) of H2O is formed, assuming quantitative stoichiometric conversion?
 
  A) 5.77
  B) 0.500
  C) 0.320
  D) 7.21
  E) 9.01

Question 2

6.0 karat gold contains ________ gold.
 
  A) 6.0
  B) 25
  C) 50.
  D) 75
  E) 1.0  102


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

blazinlyss

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Aug 27, 2018
Answer to Question 1

E

Answer to Question 2

B


fnuegbu

  • Hero Member
  • *****
  • Posts: 539
Reply #2 on: Aug 27, 2018
TY


blazinlyss

  • Sr. Member
  • ****
  • Posts: 333
Reply #3 on: Aug 27, 2018
You're welcome


« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Krebs Citric Acid Cycle Krebs Citric Acid Cycle
Saturated and Unsaturated Fatty Acid Saturated and Unsaturated Fatty Acid
Hydroxyl amino acid Hydroxyl amino acid
Ionic Equilibria - Weak Acid and their conjugate Base Ionic Equilibria - Weak Acid and their conjugate Base
Enthalpic stabilization of the transition state in an enzyme-catalyzed reaction Enthalpic stabilization of the transition state in an enzyme-catalyzed reaction
Isomerization reaction proceeds via an enediolate intermediate. Isomerization reaction proceeds via an enediolate intermediate.
Video: Pressure Flow Model Animation

For a complete list of videos, visit our video library