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
Alika [10]
3 years ago
9

Which of these describes an exothermic reaction?

Chemistry
2 answers:
solong [7]3 years ago
8 0

In Endothermic reactions, energy is absorbed.

GenaCL600 [577]3 years ago
6 0

Answer:

The answer is "Energy is released by the reaction"

Explanation:

I took the test Trust me

If you get it wrong please mark wrong...

You might be interested in
Help me number 6 and 7 please
Doss [256]
Answer : 6 - b And 7 - d
7 0
3 years ago
Find ∆G for a cell whose potential is +0.24 V with 4 moles of electrons exchanged.
Setler [38]
We need to use the following formula
ΔG= -nF E_{cell}

E_{cell}= 0.24V
n= 4 moles
F= constant= 96500C/mol

let's plug in the values.

ΔG= -(4)(96500)(0.24)= -92640 J or -92.6 kJ
6 0
3 years ago
Read 2 more answers
What is the change in freezing
loris [4]

-1.09'C is the change in freezing point

“Freezing point depression” depends on the solvent and the molar concentration of the solute.

Sulfide is highly basic, consequently

K2S

completely and irreversibly hydrolyzes in water according to the following equation:

K2S+H2O→KOH+KSH

<h3>What is freezing?</h3>

Freezing, also known as solidification, is a phase transition where a liquid turns into a solid when its temperature is lowered below its freezing point.

the temperature at which a liquid solidifies specifically : the temperature at which the liquid and solid states of the substance are in equilibrium at atmospheric pressure : melting point the freezing point of water is 0° Celsius or 32° Fahrenheit.

Learn more about change in freezing point here:brainly.com/question/23035406

#SPJ10

5 0
2 years ago
Logs in a fire, and charged batteries are examples of?
vlabodo [156]

Answer:

Logs in a fire is an example of something burning, also changing its state of form. I think thats chemical change; going from wood to ashes. And charged batteries means they haven't been used yet or they were just charged, resulting in physical change.

Explanation:

I just learned this in science.

I hope this helps!

7 0
4 years ago
At 25 ∘C only 0.0180 mol of the generic salt AB is soluble (at equilibrium) in 1.00 L of water.What is the value for Ksp for thi
Ghella [55]

Answer:

Ksp = 3.24 x 10⁻⁴

Explanation:

The dissociation equilibrium for a generic salt AB is:

AB(s) ⇄ A⁺(aq) + B⁻(aq)

              s            s

For instance, the expression for the Ksp constant is:

Ksp = [A⁺] [B⁻] = s x s = s²

According to the problem, 0.0180 mol of the salt is soluble in 1.00 L os water. That means that the solubility of the salt (s) is equal to 0.0180 mol per liter.

s = moles of solute/L of solution = 0.0180 mol/L

Thus, we calculate Ksp from the s value as follows:

Ksp = s² = (0.0180)² = 3.24 x 10⁻⁴

6 0
3 years ago
Other questions:
  • What is the atomic fraction of zinc in aluminum for a two-component alloy containing 10 wt.% zinc? atomic weight for zinc is 65.
    13·1 answer
  • ____________ is a colorless, odorless gas that forms when fuels are not completely burned.
    9·2 answers
  • A home solar energy unit stores energy for later use. On a sunny day, the temperature of the water in the tank increased from 23
    9·1 answer
  • WORTH 15 POINTS HELP PLEASE!!
    12·1 answer
  • If I add hydronium ion (H 3 O+) or Hydrogen Ions (H+) to a solution,
    8·1 answer
  • Which of the following words states what the arrow means in a chemical equation. A. Destroys B. Produces C. Yields D. Both b and
    14·1 answer
  • How many grams of sodium hydroxide are needed to completely react with 50.0 grams of H2SO4?
    7·2 answers
  • Has anyone taken the properties of matter unit test?? I need answers 50 points I swear
    11·1 answer
  • Draw Lewis structures for the following compounds, and predict which member of each pair will form hydrogen bonds:(b)CH₃OCH₃ or
    10·1 answer
  • The condensation of water vapor in the atmosphere and subsequent transfer to the ocean via precipitation is an example of a(n)?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!