Mass-Energy Conversions Through a process called the proton-proton process, a hydrogen atom goes through a series of collisions until it becomes a helium atom. Each collision releases a small amount of energy as part of the mass of the hydrogen atom is transformed, as described by Einstein's famous equation: E = Amc? where, E = energy Am = change in mass c= the speed of light (3 x 10° m/s) An electron volt (eV) is the unit used to describe the work done on an electron. 1 ev = 1.602 x 1019 J When uranium-238 goes through alpha decay to form a thorium-234 atom and an alpha particle, it releases 4.3 eV of energy. 238U → He+34TH 92 90 How much energy is released in joules?

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Mass-Energy Conversions
Through a process called the proton-proton process, a hydrogen atom goes through a series of
collisions until it becomes a helium atom. Each collision releases a small amount of energy as part
of the mass of the hydrogen atom is transformed, as described by Einstein's famous equation:
E = Amc?
where,
E= energy
Am = change in mass
c= the speed of light (3 x 10° m/s)
An electron volt (eV) is the unit used to describe the work done on an electron.
1 ev = 1.602 x 10-19 J
When uranium-238 goes through alpha decay to form a thorium-234 atom and an alpha particle, it
releases 4.3 eV of energy.
2*U →He+Th
90
How much energy is released in joules?
1.602 x 10"J
1 ev
4.3 eV.
. Rearrange the energy equation to solve for mass.
E = mc?
m =
.Use the equation from question 2 to calculate the amount of mass converted to energy during
the alpha decay.
m= (6.8886 x10")/((3×10*)')=_
When carbon-15 goes through beta decay to form a nitrogen-15 atom and a beta particle, it
releases 1 eV of energy. Follow the process from questions 1-3 to calculate the mass
converted into energy during the beta decay.
"C→";N+ e
m = (1.602 × 10")/(3x10")')=,
. Did the carbon-15 atom decay upward (element number increases) or downward (element
number decreases)?
Transcribed Image Text:Mass-Energy Conversions Through a process called the proton-proton process, a hydrogen atom goes through a series of collisions until it becomes a helium atom. Each collision releases a small amount of energy as part of the mass of the hydrogen atom is transformed, as described by Einstein's famous equation: E = Amc? where, E= energy Am = change in mass c= the speed of light (3 x 10° m/s) An electron volt (eV) is the unit used to describe the work done on an electron. 1 ev = 1.602 x 10-19 J When uranium-238 goes through alpha decay to form a thorium-234 atom and an alpha particle, it releases 4.3 eV of energy. 2*U →He+Th 90 How much energy is released in joules? 1.602 x 10"J 1 ev 4.3 eV. . Rearrange the energy equation to solve for mass. E = mc? m = .Use the equation from question 2 to calculate the amount of mass converted to energy during the alpha decay. m= (6.8886 x10")/((3×10*)')=_ When carbon-15 goes through beta decay to form a nitrogen-15 atom and a beta particle, it releases 1 eV of energy. Follow the process from questions 1-3 to calculate the mass converted into energy during the beta decay. "C→";N+ e m = (1.602 × 10")/(3x10")')=, . Did the carbon-15 atom decay upward (element number increases) or downward (element number decreases)?
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