Notice: Payments for answers will end 4/10/2017. Click for more info.
You have new items in your feed. Click to view.
Question and answer
Q: Two examples in everyday life where concentration is used to change the rate of reactions
A: Factors that affect the rate of a chemical reaction The rate of a reaction measures how fast it happens. [ When a reaction rate increases, reactants are used up faster and products are formed more quickly. We change the rates of reactions in everyday life every day, dissolving fruit drink powders in hot water before adding cold, or breaking up a headache pill before adding water, or
cutting up vegetables, or rubbing laundry detergent on a stain before washing it. The principles are the same when altering the rates of laboratory reactions: fine powders react more quickly than a few large lumps; concentrated solutions react more quickly than dilute ones; and heating a mixture speeds up the reaction. Another factor, less obvious in everyday life, is the action of catalysts. A catalyst is a substance that speeds up a reaction without being used up by it. In many cases the rate of the uncatalysed reaction is so slow that the compounds do not appear to react at all, but when a small amount of the catalyst is added the reaction is quite vigorous. Almost all industrial chemical reactions use catalysts. Most of the chemical reactions which occur in your body are controlled by biological catalysts called enzymes. Modern cars can be fitted with “catalytic converters” which convert pollutant exhaust gases into carbon dioxide, water, nitrogen and oxygen. .......... ]
Expert answered|sujaysen|Points 2028|
Question
Asked 5/24/2012 3:40:57 PM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
26,527,333 questions answered
Popular Conversations
What is the primary mission of the Department of Homeland ...
Weegy: The primary mission of the Department of Homeland Security is " ensuring that the United States and its citizens ...
12/12/2017 7:12:59 AM| 4 Answers
This year, after a lengthy, noisy debate, they decided to take ...
Weegy: This year, after a lengthy, noisy debate, they decided to take separate vacations. This is a Simple Sentence. ...
12/10/2017 4:51:34 AM| 4 Answers
Which one of the following types of sentences gives a command or ...
Weegy: Do your work! The sentence above is an example of an IMPERATIVE sentence. User: Which one of the following ...
12/8/2017 6:12:32 AM| 3 Answers
A scientific _______ is a principle that describes the behavior of a ...
Weegy: A scientific LAW is a principle that describes the behavior of a natural phenomenon. User: The gradient of ...
12/4/2017 2:17:59 PM| 2 Answers
Shakespeare was born in London in 1564. User: Jonathan Swift ...
Weegy: Jonathan Swift wrote Gulliver's Travels. TRUE. User: Shelley's life was contrary to the ideas he explored in ...
12/13/2017 7:08:02 AM| 2 Answers
The American College of Sports Medicine (ACSM) recommends doing ...
Weegy: I thing adults should get at least 150 minutes of moderate-intensity exercise per week. [ Exercise ...
12/6/2017 9:19:04 AM| 2 Answers
Weegy Stuff
S
L
Points 91 [Total 107] Ratings 4 Comments 51 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 5 [Total 5] Ratings 0 Comments 5 Invitations 0 Offline
S
P
L
P
Points 1 [Total 166] Ratings 0 Comments 1 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.