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OpenStudy (anonymous):
Thallium consists of 29.5%Th-203 and 70.5%Th-205. What is the relative atomic mass of thallium?
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OpenStudy (jfraser):
you need to find a \(weighted \space average\) Find 29.5% of 203amu, and find 70.5% of 205amu. Add them together
OpenStudy (anonymous):
thx
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