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38. Radioactive elements decay via first-order kinetics. Consider a certain type of nucleus that has a rate constant of 1.6 × 10-2 h¯¹. A sample contains 7.9 × 108 radioactive nuclides. Calculate the time required for 63% of the nuclides to decompose.
(A) 2.9 x 10¹ h
(B) 2.7 x 10¹ h
(C) 1.3 x 10¹ h
(D) 6.2 x 10¹ h
(E) 1.3 x 10¯¹ h
(A) 2.9 x 10¹ h
(B) 2.7 x 10¹ h
(C) 1.3 x 10¹ h
(D) 6.2 x 10¹ h
(E) 1.3 x 10¯¹ h
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統計： A(1), B(0), C(1), D(4), E(0) #3340083
統計： A(1), B(0), C(1), D(4), E(0) #3340083
