Required Info: Atomic mass of carbon-14 =14.003242u
Atomic mass of nitrogen-14= 14.0037u
2007-01-16 07:50:56 · 2 answers · asked by DON 1 in Science & Mathematics ➔ Physics
This is an application of E=mc^2, Einstein's energy-mass relation. The mass, m, is the difference between the mass of the carbon before decay and the mass of the nitrogen after decay. Beta particles are basically electrons (or positrons sometimes).
So the difference in mass would be 14.003242g - 14.00307g = 0.000172g. (I believe you may have omitted a 0 in the atomic mass of nitrogen). We are assuming a correspondence between mass and atomic mass.
So now we use E=mc^2. We have to convert the grams into kilograms, so mass = 1.72 x 10^-4 g = 1.72 x 10^-7 kg. Multiplying by c^2 (3.0x10^8)^2 gives an E = 1.548 x 10^10 J of energy.
2007-01-16 08:13:47 · answer #1 · answered by Blueearth423 2 · 0⤊ 0⤋
Activities: Popcorn NeutrinosIn beta decay experiments, scientists found an apparent loss of energy. ... elements (for example carbon 14 to nitrogen 14; potassium 40 to calcium 40). ...
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Pauli proposed that another particle was released during beta decay which carried the ... example carbon 14 to nitrogen 14; potassium 40 to calcium 40). ...
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Natural RadioactivityIn addition to the previously mentioned particles, energy is released in the form of ... Although the carbon-14 decays into nitrogen-14 by emitting an alpha ...
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2007-01-16 07:53:46 · answer #2 · answered by god knows and sees else Yahoo 6 · 0⤊ 0⤋