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3.011 X 10²² atoms of an element weighs 1.15gm. The atomic mass of the element is

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Detailed Solution

$\begin{array}{l} 3.011 \times 10^{22} atoms \to 1.15 gms \\ 1 mole = 6.022 \times 10^{23} atoms \to x (gms) \\ x = \frac{1.15 \times 6.022 \times 10^{23}}{3.011 \times 10^{22}} \\ x = 1.15 \times 20 = 23 gms \end{array}$

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