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Answers by Jeschafe

Answers by Jeschafe
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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?
answered Dec 4, 2023
20 votes
268k views
Greetings, i need help with this math problem. Thank you
answered Aug 29, 2023
13 votes
503k views
Which expression is equivalent to (2^3x9)4/5
answered Dec 11, 2022
10 votes
305k views
The map shows a railway to Washington that was built in the 1800s. Which state was the point of origin (starting point) of this railroad line?
answered Nov 26, 2022
13 votes
317k views
Which of these is about the same size and mass as a CARBON proton? A. electron B. neutron
answered Sep 8, 2022
20 votes
178k views
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