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.
26,443,815 questions answered
Popular Conversations
What is the solution to the proportion? n/18 = 5/9 A. n = 2.5 B. n ...
Weegy: n/18 = 5/9; 9n = 5 * 18 9n = 90 n = 90/9 n = 10
10/12/2017 10:59:55 AM| 8 Answers
During what part of "Bernice Bobs Her Hair" does Bernice cut ...
Weegy: Bernice cuts Marjorie's hair while she sleeps, and throws the braids in a car and walks down the street with her ...
10/12/2017 7:14:11 AM| 2 Answers
The Moon is made up mostly of _______, similar to minerals on Earth. ...
Weegy: The Moon is made up mostly of silicates, similar to minerals on Earth.
10/12/2017 9:54:42 AM| 2 Answers
What is a credit limit?
Weegy: A credit is an accounting entry that either decreases assets or increases liabilities and equity on the ...
10/21/2017 12:20:15 PM| 2 Answers
8z + 3 – 2z
Weegy: 8z + 3 - 2z User: y/9 + 5 = 0 Weegy: y/ 9 + 5 = 0;
10/21/2017 12:52:31 PM| 2 Answers
The Moon is made up of minerals similar to those on Earth, which are ...
Weegy: When the Moon reaches equal periods of orbital and rotational periods, it's known as SYNCHRONOUS rotation. ...
10/21/2017 1:13:59 PM| 2 Answers
The leader of the PLO (Palestine Liberation Organization) is A. ...
Weegy: IRELAND withdrew from the British Commonwealth to form an independent republic. User: The American ...
10/13/2017 7:26:44 AM| 2 Answers
Weegy Stuff
S
P
P
L
P
P
P
Points 140 [Total 2032] Ratings 11 Comments 30 Invitations 0 Offline
S
P
L
Points 101 [Total 123] Ratings 0 Comments 101 Invitations 0 Offline
S
Points 77 [Total 77] Ratings 4 Comments 37 Invitations 0 Offline
S
Points 11 [Total 11] Ratings 0 Comments 1 Invitations 1 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
L
Points 1 [Total 100] Ratings 0 Comments 1 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.