question archive The element rhenium (Re, atomic number 75) has two naturally occurring isotopes, Re-185 (mass = 184
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The element rhenium (Re, atomic number 75) has two naturally occurring isotopes, Re-185 (mass = 184.935 amu) and Re-187 (mass = 186.956 amu). Calculate the percent abundances of the isotopes of rhenium.
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