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

Author Question: A second-order reaction has a half-life of 18 s when the initial concentration of reactant is 0.71 ... (Read 161 times)

KimWrice

  • Hero Member
  • *****
  • Posts: 579
on: Aug 27, 2018
A second-order reaction has a half-life of 18 s when the initial concentration of reactant is 0.71 M. The rate constant for this reaction is ________ M-1s-1.
 
  A) 7.8  10-2
  B) 3.8  10-2
  C) 2.0  10-2
  D) 1.3
  E) 18

Question 2

Why does fluoride treatment render teeth more resistant to decay?
 
  A) Fluoride kills the bacteria in the mouth that make the acids that decay teeth.
  B) Fluoride stimulates production of tooth enamel to replace that lost to decay.
  C) Fluoride reduces saliva production, keeping teeth drier and thus reducing decay.
  D) Fluoride converts hydroxyapatite to fluoroapatite that is less reactive with acids.
  E) Fluoride dissolves plaque, reducing its decaying contact with teeth.
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ahernandez18

  • Sr. Member
  • ****
  • Posts: 361
Reply #1 on: Aug 27, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


KimWrice

  • Hero Member
  • *****
  • Posts: 579
Reply #2 on: Aug 27, 2018
Thank you!


Ahernandez18

  • Sr. Member
  • ****
  • Posts: 361
Reply #3 on: Aug 27, 2018
Always glad to help...


« previous next »
 

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

The life history of T cells The life history of T cells
Rank-order correlations show that differential consistency remains high from childhood through late ... Rank-order correlations show that differential consistency remains high from childhood through late ...
How to use implicit differentiation with higher order derivatives How to use implicit differentiation with higher order derivatives
The initial phase of carbohydrate catabolism: glycolysis The initial phase of carbohydrate catabolism: glycolysis
Reaction 7: The First Substrate-Level Phosphorylation Reaction 7: The First Substrate-Level Phosphorylation
The life cycle of Chlamydomonas The life cycle of Chlamydomonas
Video: Exercise and cardiac output & Definition of stroke volume

For a complete list of videos, visit our video library