The half-life of a positron is very short. it reacts with an electron, and the masses of both are converted to two gamma-ray photons. e+10 +0−1e⟶ this reaction is called an annihilation reaction. the mass of an electron or positron is 9.109×10−31 kg. (a) calculate the energy produced by the reaction between one electron and one positron. (b) assuming that the two γ-ray photons have the same frequency, calculate this frequency. j = hz
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Chemistry, 22.06.2019 05:00
Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change
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Chemistry, 22.06.2019 12:10
Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?
Answers: 3
The half-life of a positron is very short. it reacts with an electron, and the masses of both are co...
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