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
koban [17]
3 years ago
8

Fireworks are chemical reactions that release energy. Which of these phenomena are caused by chemical reactions that release ene

rgy? If you’re not sure, make a guess.
Chemistry
1 answer:
MariettaO [177]3 years ago
3 0

Answer:

All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy. The law of conservation of energy states that matter cannot be created or destroyed.

You might be interested in
Help me out here please???
san4es73 [151]

Answer:

A

Explanation:

5 0
3 years ago
Read 2 more answers
There are three ways in which heat be transferred - conduction, convection, and radiation. Which types of thermal transfer invol
lesantik [10]

Answer:

Convection.

Explanation:

Let us define each of the type of thermal transfer first:

- radiation is heat transfer that does not include contact between the objects. It's mediated by infra-red radiation, waves from the invisible radiation spectrum.

- conduction is heat transfer which is mediated through direct contact between objects (holding a hot cup of tea, for example)

- convection is a heat transfer found in gases and liquids. Due to different temperatures in two parts of liquid, there will also be a different density ( hotter parts have lower density). Lower density parts will start moving upwards while higher density parts, due to gravity, will move downward. As they move, they will gain or receive heat, which will cause new temperature differences and the moving will restart.

3 0
3 years ago
What is the Molarity of 0.60 moles of solute in 0.40 L of solution?
AlexFokin [52]

Answer:

1.5M

Explanation:

Molarity = moles/volume

0.60 mol / 0.40 L = 1.5 M

4 0
4 years ago
Gases and particles which are put into the air or emitted by various sources are called __________. photochemical smog emissions
Leto [7]
I would say the answer is emissions. These are the particles that are not supposed to be present in air but due to the production of different substances from humans daily activities these substances go with the air we breath. Hope this helped.
7 0
3 years ago
What tools do you use to find the volume of an irregular object
arsen [322]
<span>You could find the volume of an irregular object by water displacement. You measure the initial volume of water in a beaker, then you place the object in the water. Record the final volume and subtract it from the initial, and there you have the volume of the object.</span>
3 0
4 years ago
Read 2 more answers
Other questions:
  • Could someone please help me with my chemistry hw please please please please please please please
    8·1 answer
  • All the following are steps included in linking amino acids to form chains except
    6·2 answers
  • Which of these is a mixture? a.water b.sugar c.carbon dioxide d.popcorn and salt​
    8·1 answer
  • How does caffeine affect bees?
    15·2 answers
  • What is solubility?
    14·2 answers
  • Which pair of atoms has the highest electronegativity difference?
    7·1 answer
  • Calculate the number of sulfate ions in 41.65 g of aluminum sulfate.
    14·1 answer
  • What does the phrase “breaking in” mean as it is used in the passage?
    14·2 answers
  • What are the common properties of the following element groups:
    14·1 answer
  • What would happen to the gravity between two objects if the mass of one object decreased?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!