1) An unknown material experiences an alpha decay and a beta decay. The end prod

Question

1) An unknown material experiences an alpha decay and a beta decay. The end product is an element with 48 protons and a total of 112 nucleons. Calculate the original atomic number and atomic mass of the original material before the decays. atomic number=Answer atomic mass=Answer

2)

On the sun, the nuclei of four ordinary hydrogen atoms combine to form a helium isotope, 2He4. This reaction is called nuclear fusion. How many of what types of particles are missing from the nuclear equation listed below?

4(1H1)?2He4 + ?

Missing particle name?Answer

How many? Answer

Explanation / Answer

10

atomic number = 112/2 = 66

atonic mass = 112amu

2)

4 (1H)+ 2 e --> 4He + 2 neutrinos + 6 photons

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