You have new items in your feed. Click to view.
Question and answer
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
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.
Questions asked by the same visitor
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 rasing temp is equivalent to adding heat and by La Chat rnx shifts to right 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: D. reaction is conserved. (More)
Question
Expert Answered
Asked 7/2/2012 1:26:21 PM
0 Answers/Comments
27,037,879 questions answered
Popular Conversations
6p, 6q, 6r, and 6s are like terms. True False User: -8 is a ...
Weegy: -8 ? 4 = -2 User: 2a2b3 and -4a2b3 are like terms. True False User: How many terms are in the expression ...
2/23/2017 12:33:50 PM| 3 Answers
Which of the following did NOT play a role in weakening the power of ...
Weegy: The correct answer is B. FEUDALISM. Thank you for patiently waiting. User: Which two ...
2/23/2017 11:25:20 AM| 2 Answers
Which imaginary line separates the Eastern Hemisphere from the ...
Weegy: A. the equator User: Which civilization is considered the world's oldest? A. the Egyptians B. the ...
2/23/2017 12:35:32 PM| 2 Answers
Capitalist societies base their claim to democracy on: a. People ...
Weegy: b. Meeting the basic needs of all User: in 2006 what percentage of the worlds people lived in countries that ...
2/23/2017 1:01:49 PM| 2 Answers
Deaths due to lifestyle diseases have declined since the early 1900s
Weegy: Deaths due to lifestyle diseases have declined since the early 1900s. False. User: Which of the following ...
2/23/2017 1:34:48 PM| 2 Answers
Search engines enable you to ? A. talk to people via the ...
Weegy: An ISP (Internet service provider) is a company that provides individuals and other companies access to the ...
2/23/2017 7:41:34 PM| 2 Answers
Weegy Stuff
S
P
P
L
Points 472 [Total 1241] Ratings 2 Comments 452 Invitations 0 Offline
S
P
P
L
P
P
Points 403 [Total 2377] Ratings 1 Comments 393 Invitations 0 Offline
S
P
P
L
P
Points 226 [Total 1440] Ratings 0 Comments 226 Invitations 0 Offline
S
Points 30 [Total 30] Ratings 3 Comments 0 Invitations 0 Offline
S
Points 12 [Total 112] Ratings 1 Comments 2 Invitations 0 Offline
S
Points 12 [Total 12] Ratings 0 Comments 12 Invitations 0 Offline
S
Points 12 [Total 22] Ratings 1 Comments 2 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 Online
S
Points 5 [Total 5] Ratings 0 Comments 5 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.