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37 Oxygen has three isotopes 190,570 and 180. i
their relative abundances are 99.759, 0.037 and
0.204 respectively, calculate the relative atomic
mass of oxygen.
(Ans. 16.004
of a
2 parts by mass of hydrogen = 65 parts by mass
of zinc
65
.. 1 part by mass of hydrogen
parts by mass
2.
of zinc
Answers
Answered by
2
Answer:
The average atomic mass (
AAM
) is calculated by the following expression:
AAM
=
∑
(
isotope mass
×
percent Abundance
)
Therefore, to calculate the average atomic mass of oxygen:
AAM
=
(
16
×
0.9976
)
+
(
17
×
0.00037
)
+
(
18
×
0.00204
)
=
16.00
a.m.u.
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