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
mrs_skeptik [129]
3 years ago
7

Which of the following is NOT an exothermic reaction?

Chemistry
1 answer:
nignag [31]3 years ago
7 0

Answer:

a) dissolving sugar in water to form a mixture of sugar and water

Explanation:

exothermic reaction is reaction in which is heat is released during the reaction and endothermic reaction is a reaction in which heat is needed or required for the reaction to take place

all the options excluding option A) is exothermic as during the process of formation of bonds in oxidation, heat is released. rusting too is a slow form of oxidation and thus an exothermic reaction.

dissolving sugar in water is not exothermic reaction because their is no heat released. the sugar molecules simply disperses in the water molecules and form a solution.

You might be interested in
Molarity s defined as the
RideAnS [48]
The molar concentration of a solution, usually expressed as the number of moles of solute per liter of solution.
3 0
3 years ago
Read 2 more answers
Annie learns that the compound sulfuric acid is called the universal chemical. The acid is used in everything from gasoline to p
pochemuha

Answer:

D. H2SO4

Explanation:

The chemical  formula of a compound is an expression that stares out the elements (in form of symbols)present in a compound and the number of the atoms.

In the image;

There is one sulphur (S) atom, 4 oxygen(O) atoms and 2 hydrogen (H) atoms

The chemical formula is;

H2SO4.

The correct option is option D.

4 0
3 years ago
What is the SI base unit for time?
MaRussiya [10]
<span>The "second" is the SI base unit of time.</span>
6 0
3 years ago
For the purposes of determining electron configuration of ions, when electrons are added to a neutral atom, they will inhabit or
irga5000 [103]

Answer: Aufbau principle

Explanation: Aufbau Principle suggests that in filling electrons into orbitals, lower energy orbitals must be filled before higher energy orbitals.

8 0
3 years ago
Read 2 more answers
What kind of properties can only be observed when a substance changes into a different substance?
Shkiper50 [21]
<h3>Answer:</h3><h2>Chemical properties</h2><h3>Explanation:</h3>

By its very definition, a chemical property is one which is exhibited as a result of a chemical reaction. This may happen during or after the reaction. This is because in a chemical reaction there is a transformation in the physical composition of the components and this directly affects its chemical properties.

4 0
3 years ago
Other questions:
  • PLEASE HELP ASAP WILL GIVE BRAINIEST AND 29 POINT
    8·2 answers
  • Forming a hypothesis is accomplished through___ reasoning
    6·1 answer
  • The results of a classroom group activity performed to test the acidic or basic nature of two substances are shown in the table.
    7·1 answer
  • How many different flame colors were you able to detect? How many different elements must have been exposed to the flame to prod
    7·1 answer
  • PLEASE HELP!!!! I NEED TO TURN IT IN TODAY!!
    6·1 answer
  • The spontaneous reaction that occurs when the cell in the picture operates is as follows: 2Ag+ + Cd(s) ???? 2 Ag(s) + Cd2+ (A) V
    9·1 answer
  • What is the meaning of uniformitarianism?
    8·1 answer
  • Fill the blank.
    8·1 answer
  • What is the uncertian digit in 0.054 g
    15·1 answer
  • When hydrogen is fused into helium, energy is released from
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!