CALCULATE MASS OF AN ATOM OF SILVER AND A MOLECULE OF CO².
Answers
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To calculate the atomic mass the mass should be multiplied by its natural abundance.
Now one atom of silver (Ag)= is 107.8682 u (where u= 1.66times10-27kg )
Now divide it by Avogadro i.e.numbers of atoms or molecules present in a substance
Thus atomic weight of Avogadro is 6.02times10^(^^)23
Therefore atomic mass of silver is 107.87/6.02times10^(^^)23 =1.792times10^(^^)-229
Mass of 1 molecule of carbon- di-oxide (c@2) is = As stated earlier
No.Of moles = No.of molecules /Avogadro number
Mo.Of moles =1/6.022times10^( to )23 .
Molecular weight of CO2=(1times12+2times16)
As a Mass=No.of moles x molecular weight of CO2
As atomic mass of carbon and oxygen are 12816
Mass =1/6.022times10^( to )23times44
respectively 12+32=44
Mass =7.3065times10^23
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To calculate the atomic mass, the mass should be multiplied by its natural abundance.
Now one atom of silver (Ag) = is 107.8682 u, (where u = 1.66x10–27kg)
Now, divide it by Avogadro i.e. numbers of atoms or molecules present in a substance
Thus, atomic weight of Avogadro is 6.02 x 10^23
Therefore, atomic mass of silver is 107.87/6.02 x 10^23 = 1.792 x 10^-22g
Mass of 1 molecule of carbon- di -oxide (co2) is =
As stated earlier,
No. Of moles =No. of molecules /Avogadro number
No. Of moles = 1/6.022 x 10^23.
Mass=No. of moles x molecular weight of CO2
Molecular weight of CO2 = (1x12+2x16)
As atomic mass of carbon and oxygen are 12&16 respectively 12+32=44
Mass=1/6.022x10^23 x 44
Mass =7.3065 x10^23gm
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