1000 g of feathers is the least dense
Answer:
d it increase the number of collisions
Explanation:
cos collision is a type reaction to other particles
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Molar mass = 133.34 g/mol
Hence, 5.1 * 10^-11 alpha particles is being emitted each second by the sample.
<h3>What is half life?</h3>
The term half life is the time taken for only half of the original amount of radioactive nuclides to remain.
Thus, we have that the half life is 432.2 years or 1.36 * 10^10 s.
k = 0.693/ 1.36 * 10^10 s
k = 5.1 * 10^-11 alpha particles per second.
Learn more about alpha particles:brainly.com/question/2288334
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