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QUESTION
A meteorite is determined to be 4.5 billion years old. It now has 78 atoms of lead-206. Assuming no loss of daughter isotopes, how many atoms of uranium-238 did the meteorite have to begin with? The h
A meteorite is determined to be 4.5 billion years old. It now has 78 atoms of lead-206. Assuming no loss of daughter isotopes, how many atoms of uranium-238 did the meteorite have to begin with? The half-life of uranium-238 is 4.5 billion years.
a) 156
b) 312
c) 78
d) 238
