Renew by Mail. You can renew your passport by mail with application DS-82 if you meet the criteria listed on the U.S. Department of State web site. Renew by Mail Checklist. You can also renew your passport by bringing your prepared renewal application to a Post Officeâ¢ location.enew by Mail. You can renew your passport by mail with application DS-82 if you meet the criteria listed on the U.S. Department of State web site. Renew by Mail Checklist. You can also renew your passport by bringing your prepared renewal application to a Post Officeâ¢ location.
Solution: 12/6.022*10^23 = 1.9927*10^-23. We know that carbon 12 has a mass of 12 a.m.u and 1 amu =1.66*10^-24 grams.
Finally, add all these together for the average atomic mass. Ex: Oxygen (3 isotopes) Percent occurrence Isotope Mass. 99.759 % 15.99491 amu. .037% 16.99913 amu. .204% 17.99916 amu (.99749)(15.99491) = 15.95632 amu. (.00037)(16.99913) = .0062897 amu.