is bromine compromises two isotops Br-79 and Br-81 in the ratio of 49.7 per cent and 50.3 per cent respectively determine average atomic mass of bromine
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Br-79:
mass of Br-79 =79×49.7\100
Br-81:
mass of Br-81 =81×50.3\100
average atomic mass=mass of Br-79 + mass of Br-81\100
=80.006u
mass of Br-79 =79×49.7\100
Br-81:
mass of Br-81 =81×50.3\100
average atomic mass=mass of Br-79 + mass of Br-81\100
=80.006u
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