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m = 0,6 gr
Ar = 226 gr/mol
T = 1620 tahun = (1620×365×24×3600) s
A = __?
N = n NA
N = m/Ar • Na
λ = 0,693 / T
Aktivitas
A = λ N
A = (0,693 / T) • (m/Ar • Na)
A = (0,693 / (1620×365×24×3600)) • (0,6 / 236 • 6,02×10²³)
A = 2,1×10^10 Bq = 0,59 Ci ←