Summersnow8
  • Summersnow8
For Bismuth (Bi), determine the mass of 139 protons.
Chemistry
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Bismuth usually has 83 protons. Its atomic mass is 208.98 or 209.00 209.00-83 protons=126 neutrons 139 protons+126 neutrons=265 atomic mass of Bi
Summersnow8
  • Summersnow8
@Shalante the answer is 1.631 x 10^-22 g
anonymous
  • anonymous
Can you screenshot the question to make sure it is not a series of question relating to this.

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Summersnow8
  • Summersnow8
#34 For Bismuth (Bi), determine Bi → Atomic # = 83 Atomic mass = 208.98 A. The number of atoms in 0.243 g (7.00 x 10^20 atoms) Bi atoms / Avogadro’s # = 0.243 g / 208.98 g Bi atoms = (0.243 g / 208.98 g) * 6.022 x 10^23 Bi atoms = 7.00 x 10^20 B. The mass of 139 protons (1.631 x 10^-22 g)
RamiroCruzo
  • RamiroCruzo
Hey....Look its simple, Mass of 1 proton=1.6726219 × 10-27 kilograms, So, Now,\[136\times1.6726219 × 10^{-27} kilograms=2.27\times10^{25}\]
anonymous
  • anonymous
I did that too but everything seems to fall close at 10^-22 range

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