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Answer to Question #62446 in General Chemistry for Lauren
Question #62446
Suppose the given data represent the abundance of isotopes of an element. Calculate the average atomic mass of lead based on the given data and the atomic masses.
Isotope Atomic mass (amu) Percent abundance
Pb-206 205.97 14.6
Pb-207 206.98 10.1
Pb-208 207.98 75.3
Isotope Atomic mass (amu) Percent abundance
Pb-206 205.97 14.6
Pb-207 206.98 10.1
Pb-208 207.98 75.3
Expert's answer
m=205.97×0.146+206.98×0.101+207.98×0.753=207.59 amu
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