The mass of the lithium sample is [tex]2.39 X 10^{-8}[/tex] g when each atom in a sample of lithium (z=3, atomic mass 6. 941u) has one electron removed.
An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons.
Number of lithium atoms in sample:
N =[tex]\frac{10^{-3}}{4.8 X 10^{-19}C}[/tex]
N= [tex]2.08 X 10 ^{15}[/tex]
Mass of [tex]6.022 X 10^{23}[/tex] lithium atom in 6.941g.
Mass of lithium sample = [tex]\frac{6.941 \;X \;2.08 \;X \;10^{15}}{6.022 X 10^{23}}[/tex]
Mass of lithium sample = [tex]2.39 X 10^{-8}[/tex]g
Hence, the mass of the lithium sample is [tex]2.39 X 10^{-8}[/tex] g.
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