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
100 POINTS!!! :0! What two things do all chemical reactions have in common (tick 2)? 1. They create new substances- the substanc
dusya [7]

Answer:

1 and 4

Explanation:

7 0
3 years ago
Read 2 more answers
How can two objects of similar shape and size have different densities
Ipatiy [6.2K]
The mass and Volume is different even thought they have a similar shape and size
3 0
3 years ago
Cycloheptatrienone is stable, but cyclopentadienone is so reactive that it can't be isolated. Taking into account the polarity o
Lorico [155]

Answer and Explanation:

The resonance contributor in cyclopentadienone (as shown in the attachment below) results into the compound having a positive charge on the carbonyl group, C=O which accounts for a highly reactive anti-aromatic 4π system. And this illustrates the reason for its instability.

3 0
3 years ago
The direction of movement of the cold front shown in the figure at left is _____.
Mice21 [21]

Answer:

northwest

Explanation:

Cmon man adleast try before you ask it on brainly or else you will never get any smarter

7 0
3 years ago
Read 2 more answers
Calculate the volume in milliliters of a 1.27 mol/L silver perchlorate solution that contains 125.mmol of silver perchlorate (Ag
Lunna [17]

Answer:

This solution has a volume of 98.4 mL

Explanation:

Step 1: Data given

Molarity of AgClO4 solution = 1.27 mol/L

Number of moles AgClO4 = 125 mmol = 0.125 mol

Molar mass of AgClO4= 207.32 g/mol

Step 2: Calculate volume of the 1.27 M solution

Molarity = moles / volume

Volume = moles / molarity

Volume = 0.125 moles / 1.27 mol /L

Volume = 0.0984 L = 98.4 mL

This solution has a volume of 98.4 mL

7 0
4 years ago
Other questions:
  • As the speed of a particle increases, does its associated wavelenght increase or decrease
    13·1 answer
  • The mean free path of nitrogen molecules at 2.3°C and 1.28 atm is 1.51 x 10-5 cm. At this temperature and pressure there are 3.4
    14·1 answer
  • Which is the top layer of groundwater?
    14·2 answers
  • Cu2 -> Cu2+ is it getting oxidized?
    9·1 answer
  • Méthode pour sépare l'eau et vermiculite !
    9·1 answer
  • Which of the following statements is the most accurate? A. Energy transfers are never 100% efficient. B. Energy transfer is comp
    14·2 answers
  • The arsenic in a 1.223 g sample of a pesticide was converted to H3AsO4 by suitable treatment. The acid was then neutralized, and
    9·1 answer
  • A precipitate forms when mixing solutions of sodium fluoride (NaF) and lead II nitrate (Pb(NO3)2). Complete and balance the net
    13·1 answer
  • Which number represents an acidic pH, 4 or 9? _______ Numerical Answers Expected! Answer for Blank 1:
    5·1 answer
  • When a capacitor has a potential difference between the plates it is said to be ? . one plate has an excess of electrons and one
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!