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
timurjin [86]
3 years ago
11

How is enthalpy used to predict whether a reaction is endothermic or exothermic?

Chemistry
1 answer:
Dahasolnce [82]3 years ago
8 0
If the enthalpy change is negative, then the reaction is exothermic because heat energy was lost to the surroundings.

If the enthalpy change was positive, then the reaction was endothermic because heat energy was gained from the surroundings!

Hope this helps!! x
You might be interested in
Most protein enzymes catalyze only one specific chemical reaction effectively. What feature of protein structure is most directl
babunello [35]

Answer;

d. the specific geometry and types of amino acids in the active site

Explanation;

-Enzymes are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction. The molecules that an enzyme works with are called substrates. The substrates bind to a region on the enzyme called the active site.

-For a substrate to bind to the active site of an enzyme it must fit in the active site and be chemically attracted to it. The shape of an enzyme determines how it works. Enzymes have active sites that substrate molecules (the substances involved in the chemical reaction) fit into when a reaction happens.

8 0
4 years ago
What volume of a 0.0943 M H2SO4 solution, to three sig figs, is needed to neutralize 161.2 mL of a 0.0158 M LiOH solution given
ArbitrLikvidat [17]
I don't know the answer to long I just want points  so plz like and thank me jk  the answer is 12H2o
5 0
3 years ago
A rigid vessels contains
EleoNora [17]
Hope this helps you.

3 0
3 years ago
Why is the formation of fructose-1,6-bisphosphate a step in which control is likely to be exercised in the glycolytic pathway
Yakvenalex [24]
The answer is/6-(1-2)

Explain why it is not that because it shown
5 0
3 years ago
The volume of a given mass of agas is 360cm cubic at 50 degrees and 700 milimetres Hg .find it's volume at s.t.p​
saveliy_v [14]

Answer:

V₂  =279.9 cm³

Explanation:

Given data:

Initial volume = 360 cm³

Initial temperature = 50°C

Initial pressure = 700 mmHg

Final volume = ?

Final temperature = 273 k

Final pressure = 1 atm

Solution:

According to general gas equation:

P₁V₁/T₁ = P₂V₂/T₂

Solution:

<em>We will convert the mmHg to atm.</em>

700/760 = 0.92 atm

<em>and °C to kelvin.</em>

50+273 = 323 K

P₁V₁/T₁ = P₂V₂/T₂

V₂ = P₁V₁ T₂/ T₁ P₂

V₂ = 0.92 atm × 360 cm³ × 273 K / 323 K ×1 atm

V₂  =  290417.6 atm .cm³.  K  / 323 k. atm

V₂  =279.9 cm³

8 0
3 years ago
Other questions:
  • About 3% of the water on Earth is freshwater. Only about 40% of that freshwater is available for human use. Why is so much fresh
    12·2 answers
  • 2. In the water cycle, lake water will do which​
    8·1 answer
  • WILL GIVE BRAINLIEST Which effect is one likely result of a forest fire? a. extinction b. adaptation c. speciation d. forced mig
    9·2 answers
  • 8- Which of the following statements about a catalyst is true?"
    5·1 answer
  • Help pls I will give brainliest!
    8·1 answer
  • Lines of ___________ are also called meridians
    10·1 answer
  • How many atoms are in a 0.50 g sample of helium
    11·1 answer
  • A3.00 mol sample of CO2 (g) is in a rigid 6.00 L container at 400.°C.
    7·1 answer
  • What happens if you apply pressure on the oobleck?
    12·1 answer
  • What's the electron configuration of an N-3 ion?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!