1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Helen [10]
4 years ago
10

What describes a change that occurs when one substance reacts to another substance?

Chemistry
1 answer:
Slav-nsk [51]4 years ago
8 0
A chemical or physical change
You might be interested in
Consider the following reaction at equilibrium: 2 NH3(g) ⇄ N2(g) + 3 H2(g) What does Le Chatelier's principle predict will happe
BabaBlast [244]

Answer : The equilibrium will shift in the left direction.

Explanation :

Le-Chatelier's principle : This principle states that if any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

The given reaction is:

2NH_3(g)\rightleftharpoons N_2(g)+3H_2(g)

As per question, when we are adding N_2  then the concentration of N_2 is increased on product side then the equilibrium will shift in the direction where decrease of concentration of N_2 takes place. Therefore, the equilibrium will shift in the left direction.

Thus, the equilibrium will shift in the left direction.

7 0
3 years ago
A can of soda sitting on a supermarket shelf is a(n)
Maslowich
Isolated i believe dont hold me to that
8 0
2 years ago
Find the number of Grams
zaharov [31]

Answer: 462 g

Explanation:molar mass is M= 63.55 +2·(12.01+14.01)= 115.59 g/mol.

Mass m= n·M = 4.0 mol·115.59 g/mol= 462.36 g

8 0
3 years ago
Classify each of the four compounds as a conjugated, isolated, or cumulated diene. Compound A: Two alkenes are joined by a sigma
Lina20 [59]

Explanation:

Conjugated diene is the one that contains alternate double bonds in its structure. That means both the double bonds are separated by a single bond.

Cumulated diene is the one that contains two double bonds on a single atom. This means it has two double bonds continuously.

Isolated double-bonded compound has a single bond isolated by two to three single bonds.

Compound A: Two alkenes are joined by a sigma bond.

For example:

-CH_2=CH-CH=CH2-

It is a conjugated diene.

Compound B: Two alkenes are joined by a C H 2 group.

It is a cumulative diene.

Compound C: Two alkenes are joined by C H 2 C H 2.

Then it is an isolated alkene.

Compound D:  A cyclohexene has a double bond between carbons 1 and 2. Carbon 3 is an sp 2 carbon that is bonded to another s p 2 carbon with an alkyl substituent.

Hence, compound D is a conjugated diene.

8 0
3 years ago
In which step of the four-stroke engine cycle does the spark plug initiate the combustion reaction?
Dominik [7]
ANSWER
Power stroke

EXPLANATION

At the power stroke stage, the piston is forced to move down by the expanding gases as both intake valve and exhaust valve are closed.
A spark from the spark plug contributes to ignition of the compressed fuel air mixture to released energy to perform work.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is the largest volume? (B?)
    7·1 answer
  • What does viscosity describe?
    7·2 answers
  • a chemist is studying an unknown substance he can break it into its elemental only by using chemical means.Based on this observa
    7·1 answer
  • What produces hydrogen ions as the only positive ions in aqueous solution?
    5·2 answers
  • A person loses 2.70 lb in two weeks. how many grams did they lose?
    5·1 answer
  • When is it necessary for scientists to do research?
    6·2 answers
  • For fun<br><br> need full details to win<br> would you rather be a man or a women and why
    5·2 answers
  • Which organelle in cytoplasm is responsible for carrying hereditary information? ​
    10·1 answer
  • 7.In which state of matter molecules have more energy to vibrate.​
    14·1 answer
  • Calculate the concentration (in m) of hydronium ions in a solution at 25. 0 °C with a POH of 3. 58.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!