Question

Nt A new element, Philosophium, was discovered. It has a decay constant of 0.00291 s- and is a known alpha-particle emitter. Answer the following three questions, using three significant digits. B C D Part A: Which curve best represents a typical nuclear decay curve? t B A D Part B: At a certain time, 93.20 g of Philosophium are present. How much remains (N) after 8.850 minutes? N = 00 Part C: What happens to the atomic number of one of the decaying nuclei? The atomic number of the daughter nucleus is less than the atomic number of the Philosophium. There is not enough information to answer the question. The atomic number of the daughter nucleus is greater than the atomic number of the Philosophium. The atomic number of the daughter nucleus is the same as the atomic number of the Philosophium.

Answer 1

Part A a The reaction. on rate of the As nuclear decay (radioactivity) first order A first order reaction is the one in which the reaction (speed) depends concentration. cencentration decreases the speed of reaction decreases. decay equation can be written as ->t INA: Nie X. decay Ne → Number (Amerist) of The above equation represents nucledes present at time t exponential Wi > Initial amount 0.693 The constant f decay. an tyz tyz half life Graphically with So Curre D represents typical nuclear decay а. Curve D t-> -xt Ni e Part B Ne Using decay / equation 0.00291š. > Wi 93.20g ㅏ 8.850 x 60 s 5315 -0.002914531 NG = (93.20)x e Ne = 19.8769

part c that decay is is by Given by emission of alpha particles. 4 A - parent E A-4 a daughter "Не у + Х 2 Z-2 Z nothing but Heliüm nuclei (he) and a atomic number an lens than He but Alpha particle is loses The parent nudei mass number 4 by il emission So atomic number of daughter nucleus is the atanic number of philosophiumi the option answer corect