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Question 20 5 pts AK-56 atom (potassium-56) has a nucleus with 19 protons and an atomic mass of 56.0085186 u. What is the nuc
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BE/ NZ + nm - theoretial mass ($ex 1.007815+ (56-19)X 1.008665 -56.0085186.) 931,5 Mev 56 BELA 7.66 Meu An,

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