(a) What isotope is used as the standard in establishing the atomic mass scale? (b) The atomic weight of boron is reported as 10.81, yet no atom of boron has the mass of 10.81 amu. Explain.

Chemistry for Engineering Students
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Chapter2: Atoms And Molecules
Section: Chapter Questions
Problem 2.75PAE: 2.75 Chlorine has only two isotopes, one with mass 35 and the other with mass 37. One is present at...
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(a) What isotope is used as the standard in establishing the atomic mass scale? (b) The atomic weight of boron is reported as 10.81, yet no atom of boron has the mass of 10.81 amu. Explain.

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