Question.
What will be the mass of one ${ }^{12} \mathrm{C}$ atom in $\mathrm{g}$ ?
What will be the mass of one ${ }^{12} \mathrm{C}$ atom in $\mathrm{g}$ ?
Solution:
1 mole of carbon atoms $=6.023 \times 10^{23}$ atoms of carbon
$=12 \mathrm{~g}$ of carbon
$\therefore$ Mass of one ${ }^{12} \mathrm{C}$ atom $=\frac{12 \mathrm{~g}}{6.022 \times 10^{23}}$
$=1.993 \times 10^{-23} \mathrm{~g}$
1 mole of carbon atoms $=6.023 \times 10^{23}$ atoms of carbon
$=12 \mathrm{~g}$ of carbon
$\therefore$ Mass of one ${ }^{12} \mathrm{C}$ atom $=\frac{12 \mathrm{~g}}{6.022 \times 10^{23}}$
$=1.993 \times 10^{-23} \mathrm{~g}$
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