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The element copper has naturally occuring isotopes with mass numbers

The element copper has naturally occuring isotopes with mass numbers of 63 and 65. The relative abundance atomic masses are
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Q: the average atomic mass of naturally occurring rhenium is 186.21 amu. There are two common isotopes of naturally occuring
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22. The two naturally occurring isotopes of copper 63Cu &64Cu have masses 62.2996amu&64.9278 amu respectively. The atomic mass
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The two naturally occurring isotopes of copper 63Cu &64Cu have masses 62.2996amu&64.9278 amu respectively. The atomic mass of
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This Chem problem is really difficult -Need help please!Magnesium Consists of three naturally occuring isotopes. The percent
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2. asked by Mary Joy
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Naturally occurring copper is a mixture of two isotopes. One of these has 34 neutrons the other has 36. If the relative atomic
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the relative atomic mass (A_r) of atoms is the average mass of all the different isotopes of an element (taking into account the
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2. asked by Anonymous ;)
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The element boron has three naturally occuring isotopes. One has the atomic mass 10.0129(54.4%), another 11.0093(12.75%). What
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A naturally occuring sample of copper consists of 69.2% of Cu63 and 30.8% of Cu65.The relative atomic mass of Cu63 is 62.93 and
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2. asked by Bhagavatula yogiraj
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Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and relative abundance of 69.17%. Use the atomic
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