You have new items in your feed. Click to view.
Question and answer
Q: When magnesium carbonate, MgCO2, reacts with nitric acid, HNO3, it forms magnesium nitrate, Mg(NO3)2, and carbonic acid, H2CO3. Carbonic acid then breaks down into water and carbon dioxide. Which two
types of reactions take place in this process? A. synthesis and decomposition B. single-replacement and combustion C. double-replacement and decomposition D. double-replacement and combustion
A: C. double-replacement and decomposition
Get an answer
Original conversation
User: When magnesium carbonate, MgCO2, reacts with nitric acid, HNO3, it forms magnesium nitrate, Mg(NO3)2, and carbonic acid, H2CO3. Carbonic acid then breaks down into water and carbon dioxide. Which two types of reactions take place in this process? A. synthesis and decomposition B. single-replacement and combustion C. double-replacement and decomposition D. double-replacement and combustion

Weegy: C. double-replacement and decomposition
cha97mw|Points 1097|

User: For the chemical reaction C2H6 + 137 kJ ? C2H4 + H2, the chemical energy of the A. reactant is greater than the chemical energy of the products. B. products is greater than the chemical energy of the reactant. C. reactant and the chemical energy of the products are equal. D. reaction is conserved.

Weegy: B. [ products is greater than the chemical energy of the reactant. moles = mass / molar mass moles HBr = 186 g / 80.908 g/mol = 2.3 moles TRUE C2H6 + 137 kJ - - -> C2H4 + H2 You can see that the energy (137 kJ) is on the reactant side of the equation. So you have to put energy into the reaction to to form the prodicts. Therefore the products must have a higher energy then the reactants = B ]
Expert answered|dennis003|Points 170|

Question
Asked 7/2/2012 12:53:37 PM
0 Answers/Comments
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
0 questions answered
Popular Conversations
Calculate the product 1/3 and 1/5
Weegy: The product of 1/3 and 1/4 is 1/12. Solution: 1/3 * 1/4 = 1/12
5/23/2017 9:39:31 PM| 1 Answers
Which branch of government makes the law
Weegy: The legislative branch of government makes the law.
5/24/2017 6:13:01 PM| 0 Answers
A tapeworm lives off the nutrients in an animal s digestive tract. ...
Weegy: A tapeworm lives off the nutrients in an animal's digestive tract. Therefore, a tapeworm is a PARASITE.
5/24/2017 10:19:19 AM| 0 Answers
Giving human characteristics to objects or ideas is
Weegy: Giving human characteristics to objects or ideas is PERSONIFICATION.
5/24/2017 10:17:32 AM| 0 Answers
Stage 1 of delivery averages about 8 hours but may be longer for ...
Weegy: Stage 1 of delivery averages about 8 hours but may be longer for first-time mothers. TRUE.
5/24/2017 10:12:05 AM| 0 Answers
The position from which you write about your subject is called your ...
Weegy: The position from which you write about your subject is called your POINT OF VIEW.
5/24/2017 10:03:54 AM| 0 Answers
Which type of tax is applied only to particular goods? A. excise ...
Weegy: Excise tax is applied only to particular goods.
5/23/2017 7:13:31 PM| 0 Answers
In “A Few Don’ts,” Pound encourages the use of __________instead of ...
Weegy: In A Few Don'ts, Pound encourages the use of The Concrete instead of the vagueness of abstractions. User: ...
5/22/2017 11:51:10 AM| 0 Answers
Giving human characteristics to objects or ideas is
Weegy: Giving human characteristics to objects or ideas is PERSONIFICATION.
5/19/2017 10:58:38 PM| 0 Answers
Motivation refers to forces that
Weegy: Motivation refers to forces that: energize, direct, and sustain a person's efforts.
5/19/2017 10:41:24 PM| 0 Answers
Weegy Stuff
S
Points 26 [Total 26] Ratings 0 Comments 26 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 366] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
P
P
L
P
P
P
Points 7 [Total 1730] Ratings 0 Comments 7 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 2 [Total 467] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.