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Natural Chlorine is found to be a mixutre of two isotopes of masses 34.98 a.m.u and 36.98 a.m.u. respectively. Their relative abundances are 75.4 and

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Natural Chlorine is found to be a mixutre of two isotopes of masses 34.98 a.m.u and 36.98 a.m.u. respectively. Their relative abundances are 75.4 and 24.6% respectively. Find the composite atomic mass of natural chlorine.
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Correct Answer - 35.47 a.m.u.
Average atomic mass of natural chlorine
=weigthed average of its isotopes
`=(75.4xx34.98+24.6xx36.98)/100 a.m.u`
`=35.47a.m.u.`
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