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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: 21385 on February 27, 2008, 12:43:19 AM

Title: hydrogen/helium/nuclei problem
Post by: 21385 on February 27, 2008, 12:43:19 AM
I don't really understand the solution in the last part (circled in red). Can anyone help me?

Thanks a million, srry for such a long question
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