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.
The mass of a proton is approximately 1.6726 * 10^-24 g. Because the masses of particles in atoms are so small, scientists developed a new unit for them. The SI unit known as the atomic mass unit, abbreviated amu, is used to express the masses of subatomic particles. Scientists assign each proton a mass of 1 amu and symbol 'p.' All protons are identical, no matter from which kind of element they come. All the atoms of one element have the same number of protons.