Mole ConceptHard
Question
A graph is plotted for an element by putting its mass on X-axis and the corresponding number of atoms on
Y-axis. What is the atomic mass of the element for which the graph is plotted? (NA = 6.0 × 1023)
Options
A.80
B.40
C.0.025
D.20
Solution
$\text{Slope=}\frac{N_{A}}{\text{Atomic mass}} = 1.5 \times 10^{22}$
⇒ Atomic mass = 40
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