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Naturally occurring thallium consists of two stable isotopes, Tl-203 and Tl-205 (atomic...
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Let us say we have `X%` of Ti-205. Then the rest `(100-X)%` is the Ti-203 percentage.
It is given that average atomic mass of Ti is 204.4.
Mass of Ti-205 in isotope` = X/100xx205`
Mass of Ti-203 in isotope `= (100-X)/100xx203`
`X/100xx205+(100-X)/100xx203 = 204.4`
`205X+20300-203X = 20440`
`X = 70`
So the percentage of Ti-205 in the isotope is 70%.
Posted by jeew-m on August 21, 2013 at 4:50 AM (Answer #1)
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