Chemistry, 31.01.2020 08:59 tamaliablanchard
The element rhenium has two naturally occurring isotopes, 185 re and 187 re, with an average atomic mass of 186.207 amu. rhenium is 62.60% 187 re, and the atomic mass of 187 re is 186.956 amu. calculate the mass of 185 re. how do you do this?
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