Linked Questions

9
votes
6answers
2k views

Conservation of Mass and Energy [duplicate]

I was thinking about some physics (relativity in particular), when it suddenly occurred to me that all my life I had been balancing chemical equations assuming conservation of mass, but I was ...
0
votes
2answers
152 views

Does chemical energy contribute to mass? [duplicate]

Does chemical energy contribute to the mass of an object? I don't mean the bond energy, but the possible energy that could be released (i.e. Does an atom of oxygen and a molecule of hydrogen (H2) have ...
0
votes
1answer
133 views

What is chemical binding energy? [duplicate]

Like in nuclear physics we deal with binding energies, i heard someone saying Chemical binding energy. What is that and how a chemical reaction follows mass energy interconversion based on this ...
0
votes
0answers
29 views

Does the relation between energy and mass, proposed by Einstein hold true for all forms of energy? [duplicate]

I don't have a strong chemistry background, but I recently stumbled upon an answer that concluded that when supplying a reactant(s) with energy E it should be that the difference between the masses of ...
17
votes
2answers
3k views

Increase in mass of battery of my smartphone [closed]

The charge on my smartphone was zero. I charged my phone to its maximum capacity. How much mass $\Delta m$ did my mobile gained after charging the battery? Maximum capacity of the smartphone's ...
5
votes
6answers
26k views

What is Energy made of?

We have the famous equation $E = mc^2$, and we also believe that matter is made of particles. Then, What is the energy made of? If the two are interchangeable, there must be some common building ...
10
votes
3answers
2k views

Is mass-energy conversion in chemical reactions experimentally observable

This is a common point of argument on internet forums. I think it is fairly well established theoretically that there is a very small amount of mass converted to energy in an exothermic chemical ...
4
votes
2answers
2k views

Does the mass of a body absorbing photons increase?

Let's say I have a photon collector in orbit around the sun. It manages to collect photons perfectly efficiently, that is, without radiating off any energy. Then, using Einstein's equation: $$E = m ...
2
votes
4answers
1k views

The “binding energy” of bonded particles adds mass?

This is a follow-up my previous question. Several of the answers indicated that the mass of a particle (atom, proton, etc.) increase with the "binding energy" of it's component particles - the energy ...
5
votes
1answer
1k views

What are the average matter, antimatter, and binding energy composition of protons and neutrons?

For a free baryon at rest at room temperature, how much of its ~1Gev (rest) mass can (on average) be considered as matter, as antimatter, and as binding energy? For a baryon in a nucleus, I assume ...
6
votes
1answer
2k views

Where does energy come from in a nuclear fission if nucleon count doesn't change?

In a nuclear fission the total number of protons and neutrons are conserved. Then the mass converted to energy $E=mc^2$. From where this mass come from? Does that mean that all protons and neutrons ...
2
votes
2answers
845 views

From where does the binding energy come from always to bind the nucleus?

Inside the nucleus there would always be the repulsive forces. The binding energy puts the nucleus binded but the energy eventually gets exhausted, but the repulsive forces are ever lasting. To bind ...
0
votes
1answer
98 views

Non-conversion of mass & energy?

This article is certainly an interesting alternative perspective, but is it factual or does it contain fallacies? http://www.circlon-theory.com/HTML/EmcFallacies.html Are mass and energy not ...
0
votes
0answers
30 views

Difference between Annihilation and Mass defect

I just need to clear something up. As I understand it, the mass defect of a system is the result of a loss of potential energy of a system. So (for example) when a nucleus forms, energy is released, ...