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
andreev551 [17]
3 years ago
10

Which of the following statements is true for an exothermic reaction?

Chemistry
2 answers:
shutvik [7]3 years ago
6 0
The enthalpy change for an exothermic reaction is negative because heat is being released, so that takes out two of the responses. Since energy is being released into the surroundings due to the exothermic reaction, the potential energy of the products is lower than that of the reactants. Energy is being put in to make the reaction occur, but then that energy is all being released into the surroundings thus a lower potential energy level for the products
Natalija [7]3 years ago
5 0

<u>Ans: The products have lower potential energy than the reactants, and the enthalpy change is negative. </u>

In general, chemical reactions can be broadly classified into two categories:

1) Exothermic

2) Endothermic

Exothermic reactions proceed with the evolution of heat. Here, the reactants have a higher potential energy which is released as the reaction progresses to form products. Consequently, the products are in a lower energy state. Since energy is released, the enthalpy change will be negative.

In contrast, endothermic reactions proceed with the absorption of heat. Here,the products will be in a higher energy state. Since energy is absorbed, the enthalpy change will be positive.

You might be interested in
The last electron in an atom of oxygen is added to a ___ orbital.
Aleks [24]

Answer:

A

Explanation:

4 0
3 years ago
Rank the following elements by electron affinity, from most positive to most negative EA value.
LenKa [72]

Answer:

Explanation:

Bromine >Tellurium > Phosphorus > Helium > Sodium

Electron affinity of Bromine , Tellurium , Phosphorus are positive , of helium is zero and of sodium is negative .

3 0
3 years ago
Is the perceived frequency of a sound wave
ryzh [129]

Answer:

pitch

Explanation:

7 0
3 years ago
Which statements describe Newton and the law of universal gravitation? Check all that apply.
jonny [76]

Answer:

Newton believed that gravity was a force.

The law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.

Newton was the first to have the idea that gravity is everywhere.

8 0
3 years ago
Read 2 more answers
How is volume calculated given mass and density
Ymorist [56]

Answer:

volume is equal to the mass divided by the density (V = M/d).

4 0
2 years ago
Read 2 more answers
Other questions:
  • Within the atmosphere as the altitude increases?
    10·2 answers
  • The total volume of seawater is 1.5 x 1021L .Assume that seawater contains 3.1 percent sodium chloride by mass and that its dens
    11·1 answer
  • Which of the following statements is TRUE?
    12·1 answer
  • A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have?
    11·2 answers
  • What is the relationship between metals and the number of electrons in the outer level?
    5·1 answer
  • Which character of Life distinguishes a fire and a flowering plant​
    5·1 answer
  • Find the number of moles of sodium hydroxide in 25cm3 solution of concentration 0,1 mol/dm3​
    7·1 answer
  • What is the concentration of NaCI in an aqueous solution that contains 0.032 grams of NaCI in 600. Grams of the solution
    10·1 answer
  • Is #11 balanced or unbalanced?
    11·2 answers
  • Calcium propionate [Ca(CH₃CH₂COO)₂; calcium propanoate] is a mold inhibitor used in food, tobacco, and pharmaceuticals.(a) Use b
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!