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
Misha Larkins [42]
3 years ago
13

Is burning of coal a reversible change??? If yes how?

Chemistry
2 answers:
BARSIC [14]3 years ago
7 0
No, for coal burning<span> to be a </span>reversible change<span>, you would need the ability to take CO2 and turn it back into solid carbon.</span>
koban [17]3 years ago
5 0
I don't think so. No way that I know anyway. It it could be done then the need for more coal to be mined would have stopped hundreds of years ago. Once coal is burned, it forms water and carbon dioxide (essentially) with some sulfur oxides. 

How do you put that back together again. It's a little like humpty dumpty.
You might be interested in
Boyle's law only works when a gas is kept at a constant temperature. Experimentally this is very tricky as changes in pressure o
Lady bird [3.3K]

The heat that creates this temperature change coming from change in the internal energy of the system as per as first law of thermodynamics.

<h3>What is Boyle's law ?</h3>

A law stating that the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature.

As we know, Boyle's law only works when the gas is kept at a constant temperature

Here,

When volume of gases decreased, it means work done has occurred on the system, so the work done is used for raising internal energy of the gas and the other is released as the thermal energy.

So,

According to 1st law of thermodynamics,

we know  Q =  ΔU + W  i.e, change in internal energy and work done. So this is a reason. Changing temperature occurs.

Learn more about Internal enrgy here ;

brainly.com/question/11278589

#SPJ1

6 0
2 years ago
Which of the following "spheres" is NOT involved in the water cycle?
olya-2409 [2.1K]
B is the correct answer.
The exosphere is the outermost region of the atmosphere the gradually merges out into space. The water cycle does not occur within this region.
5 0
3 years ago
Read 2 more answers
) Calculate the number of moles of sulfuric acid that is contained in 250 mL of 0.500 M sulfuric acid solution
maksim [4K]

Explanation:

According to the analysis, Molarity is amount mole per volume(1L). the amount in mole would be molarity × volume in litres.

0.500M × (250/1000)L= 0.125moles.

I hope this helps**

3 0
3 years ago
Which of the following is true for an excess reactant?
kupik [55]

Answer:

C) It is the reactant that is left over after the reaction stops.

Explanation:

The excess reactant is the reactant that is left over after the reaction stops. The extent of the reaction is not determined by this reactant.

A limiting reactant is a reactant that is in short supply within a given reaction.

Such reactants determines the extent of chemical reaction.

  • Limiting reactants are used up in a chemical reaction.
  • The excess reactants remains unchanged after the reaction.
8 0
3 years ago
Would you expect an atom to have a charge?
puteri [66]

Answer:

An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral.

4 0
1 year ago
Other questions:
  • Which term is defined as “anything that has mass and occupies space”? a -compound b - element c - substance d - matter
    5·1 answer
  • Elements that easily give up electrons are called ? a metals b metalloids c nonmetals d noble gasses
    7·2 answers
  • A car with a mass of 1360 kg accelerate from 120 m/s 2 to 520 m / s in 8 seconds.what is the acceletation of the car
    6·1 answer
  • The process by which increased levels of CO2 in the atmosphere lead to enhanced growth of vegetation, which then removes CO2 fro
    9·1 answer
  • Atom tableTomic number mass number number of protons number of neutrons number of electrons symbol
    8·1 answer
  • Calculate the specific heat of a piece of wood if 2000 g of wood absorbs 75,250 J of heat, and its temperature changes from 30°C
    6·1 answer
  • A chemical equation is balanced when the number of each
    10·1 answer
  • How many hydrogen atoms are there in 7.30 moles of ethanol (C2H5OH)?
    9·1 answer
  • What is a positive ion?
    14·1 answer
  • Create a hypothesis that can be tested in an experiment​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!