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When Marie Curie Isolated uranium from pitchable, she realized that the [itchable was more radioactive than the uranium she had extracted. What did she conclude about her observations?

pitchblende itself is a radioactive element

the pitchblende sample contained an unknown radioactive the pitchblende sample was defected ***

pitchblende should be used as radiation therapy
10 years ago

Answers

Damon
Yes, in fact it was Thorium.
10 years ago
jeje
Ok thanks!
10 years ago
Hal
1. C
2. B
3. B
4. D
Unit 4 lesson 7
6 years ago

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