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
KiRa [710]
3 years ago
6

Which of the following is an example of an exothermic reaction? silt settling out of muddy water, bubbles forming in soda, photo

synthesis or fireworks
Chemistry
1 answer:
Rudik [331]3 years ago
4 0
Fireworks
An exothermic reaction is one where the products have lower energy than the reactants, so the reaction yields energy. The chemical compounds present in firework fuel release a lot of energy upon oxidation. Photosynthesis is endothermic, settling of silt is not a chemical reaction, it is a physical change. Finally, the bubble formation in soda is not exothermic; otherwise, the sodas would become very hot very fast.
You might be interested in
Which of the following has the greatest force between particles? Why?
KatRina [158]
D NACL because it is ionic bond and all the others are covalent 
7 0
3 years ago
Read 2 more answers
Liquid to gas require heat?
Anton [14]

Answer:

yes

Explanation:

5 0
3 years ago
Read 2 more answers
Which is most likely to provide the best data on volcanic activity over the last 2000 years?
dimaraw [331]

Answer:

By the time the Vesuvius eruption sputtered to an end the next day, Pompeii was buried under millions of tons of volcanic ash. About 2,000 Pompeiians were dead, but the eruption killed as many as 16,000 people overall. By

the time the Vesuvius eruption sputtered to an end the next day, Pompeii was buried under millions of tons of volcanic ash. About 2,000 Pompeiians were dead, but the eruption killed as many as 16,000 people overall.

Explanation:

5 0
3 years ago
An electron in a hydrogen atom moves from level 1 to level 4. The electron then drops from level 4 to level 2. Which statement d
butalik [34]

Answer:

B. The energy absorbed in the first move is greater than the energy released in the second move.

Explanation:

It takes large amounts of energy for a electron to jump energy levels and the further it moves, the more it takes.

6 0
3 years ago
Read 2 more answers
20 moles of NH3 are needed to produce ? Moles of H2O
AfilCa [17]

Hi :)

20 mol NH3 x 6 H2O/4 NH3 = 30 mol H2O

Hope this helped :)

5 0
3 years ago
Other questions:
  • During lab, you learned about exothermic and endothermic heats of solution. which compounds below could be used for a hot pack?
    13·1 answer
  • A cylinder with a movable piston contains a sample of gas having a volume of 6.0 liters at 293 K and 1.0 atmosphere. What is the
    9·1 answer
  • 2 PUNTIS
    6·1 answer
  • Methane is a colorless, odorless gas. it oxidizes in air and has a boiling point of -161°
    11·2 answers
  • When a gas is heated,
    12·1 answer
  • In your reactions, you diluted the provided stock concentration of ADH for your alcohol. Calculate the actual ADH concentration
    12·1 answer
  • Justify the<br>the importance of solar enengy as on <br>alternative source of energy in Nepal​
    10·1 answer
  • Aspirin has the formula C9H8O4 If it is decomposed, a product it could never produce is:
    7·1 answer
  • Write balanced chemical equations, including states, for the following reactions:
    7·1 answer
  • Describe two ways that can be used to identify which layer is organic and which layer is the aqueous layer in a liquid-liquid ex
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!