Sort each of the following symbols for the nuclear decay particle they represent

Question

Sort each of the following symbols for the nuclear decay particle they represent. Some of the symbols may not be used. alpha symbol(s) beta symbol(s) gamma symbol(s) positron symbol(s) proton symbol(s) 4 2 He -1 e 4 2 -1 10 -10 00 e 00 g Previous 8 Give Up & View Solution O Check Answer e Next Hint Recall that in atomic symbols the top number is the mass number and the bottom number is the atomic number. The mass number is the sum of the protons and neutrons. The atomic number is th number of protons.

Explanation / Answer

2) Answer

1st order reaction
t1/2 = 0.693/ k
=> k = 0.693/t1/2 = 0.693/14.3 days-1

ln(a0/a) = kt
[a=43.7 g; t=4days]
a0 = a exp(kt) = 43.7 exp(4*0.693/14.3) = 53.0 g

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