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What is the energy change associated with the combustion of c2 h4?
Wiki User
∙ 13y ago
i at first wrote out the enthalpies of combustion for hydrogen ethene and ethane and then manipulated the equations , ultimately my answer ended up being -137 but when i tried to find out the enthalpy on Google it just came up this quiestion did you find out what the answer was!?
Wiki User
∙ 13y ago
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Why is mass energy not apparent for chemical reactions?
According to Einstein's equation, E = mc2, any time there is energy released by a chemical reaction there must be a change in mass. The factor, c2,is such a hugh factor that the mass change is so small that it is not measurable by our balances.
How does GeV relate to quarks?
GeV (giga-electron-volt) is simply a unit of energy, often used for subatomic particles. Because in the subatomic world the mass-energy equivalence is much more obvious than in the large-scale world, it is often also used as a unit of mass. MeV/c2 or GeV/c2 is technically more correct, but the c2 factor is often implied, i.e., omitted.
How does the mass of the product in a chemical reaction compare to the mass of the reactants?
Generally accepted that the total mass before = total mass afterwards. To be a bit pedantic, if heat energy is produced or absorbed then the total mass must change by E/c2 (which is tiny) because of Einstein's famous relation between mass and energy. This would generally appear as a temperature change.
How do chloroplasts turn sun energy into sugar?
Through Photosynthesis. The plant absorbs the solar energy, the carbon (C2), and water (H2O) and it creates the glucose (C6H12O6 + 6 O2).
Find the velocity and momentum of electron whose kienetic energy equals its rest mass which is 9.1110 power -31?
I rather believe the question ask the kinetic energy equals to rest mass energy of electron. If it would state the figure of rest mass of 9.111 x 10-31 kg = kinetic energy of 9.111 x 10-31 J the unit should be given more clearly. It is given rest mass of 9.111 x 10-31 kg and rest mass energy is calculated by E = mC2 The kinetic energy is Ek = mC2/(1-v2/C2)0.5 - mC2 and for Ek = mC2 It is solving for mC2 = mC2/(1-v2/C2)0.5 - mC2 --> 2mC2 = mC2/(1-v2/C2)0.5 2 = 1/(1-v2/C2)0.5 Solve for v should not be too hard for you. Now, the momentum You must notice that when v is close to speed of light (C), you can't simply use momentum = mv but rather P = mv/(1-v2/c2)0.5 Use v obtained from above to solve for momentum.
Does a Grammy ray consists of pure energy and no mass?
No. You might say it is "pure energy", but any energy has an associated mass, according to the formula e = mc2. Thus, the associated mass can be calculated as m = e/c2. (Therefore, it will also have momentum.)
How does e equals mc2 show that matter can produce energy?
A better equation would be dE=dm*c2 showing that a change in mass is equivalent to a change in energy
How do you change the timing belt on a Citroen C2?
How to change a timing belt on a citroen c2 vts
How do you calculate the recoil energy of a daughter nucleus?
The conservation of energy tells us that energy before the collision equals energy the comes out of the system after the collision. In the case of a stationary target nuclei and a neutron beam we have as our initial energy Rest mass (E - mc2) of the nuclei and the particle in the beam. Kinetic energy of the nuclei and the neutron projectile. So the initial energy looks like KEn + mn*c2 + KEnuc + mnuc*c2 We note that the initial KE of the stationary nucleus is zero and omit this term. KEn + mn*c2 + mnuc*c2 Assuming neutron absorption (i.e. only 1 particle) all of the energies after the collision are described by KEnuc_f + mnic_f*c2 Use the principle of conservation of energy to set the two equal to one another. KEn + mn*c2 + mnuc*c2 = KEnuc_f + mnic_f*c2 Now solve for the final KE of the combined nuclei, KEnuc_f KEnuc_f = (KEn + mn*c2 + mnuc*c2) - (mnic_f*c2) This is the recoil energy.
Ethane plus oxygen equals carbonmonoxide plus water?
That would be combustion with the products being carbon dioxide and water (assuming complete combustion) and a release of energy.
What is the meaining of E equals mc squared?
It means that there is a certain equivalence between matter and energy. For example, every amount of energy has an associated mass. c2 (the square of the speed of light) simply is the conversion factor. In SI units, that means that 1 joule of energy has an associated mass of 1 / (9 x 1018) kilograms.
Why is mass energy not apparent for chemical reactions?
According to Einstein's equation, E = mc2, any time there is energy released by a chemical reaction there must be a change in mass. The factor, c2,is such a hugh factor that the mass change is so small that it is not measurable by our balances.
If energy can be converted to mass and vica versa what's the c2 got to do with the e equals m c 2?
The c2, which is the speed of light squared, is the conversion factor when making the conversion between mass and energy or vice versa. We see that E = mc2 and we can move the c2 to the other side. It will then be E/c2 = m. Whatever you're going to do, that is, whatever conversion you make, the c2 is the conversion factor in the operation.
How energy released is utilised for nuclear fission and nuclear fusion?
Basically, you get less matter after both processes. The energy achieved can be calculated by E = m*c2. E = Energy. m = the mass "disappeared". c2 = speed of light squared.
Why he multiply m with C2?
as for as iam concerned i think albert sir multiply m with C2 becoz when a mass moves with this velocity then it become in the form of energy.
When to change a citroen c2 cambelt change?
80,000 miles or 10 years. But if your in any doubt change it now.
How do you change the headlight bulb on a citroen c2?
how do i replace a h/lamp bulb on citroen c2 o/s.or easy way to remove headlamp
