Question: 3. Rhendum. ( Re) has two isotopes: Re and Re whth an average atomic mass of 186.21 amu. Rhenium is 70.4% Re which has amas

3. Rhendum. ( Re) has two isotopes: Re and Re whth

3. Rhendum. ( Re) has two isotopes: Re and Re whth an average atomic mass of 186.21 amu. Rhenium is 70.4% Re which has amas of 186.956 amu. The mass of the in amu is equal to: a) 185.76 b) 187.00 c) 185.31 d) 184.44

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