The number of oxygen atoms in \( 24.9 \mathrm{~g} \) of D \( \mathr...

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The number of oxygen atoms in \( 24.9 \mathrm{~g} \) of
D \( \mathrm{CuSO}_{4} .5 \mathrm{H}_{2} \mathrm{O} \) is (molar mass of \( \mathrm{Cu}=63 \mathrm{~g} \mathrm{~mol}^{-1} \) )

W
(A) \( 2.41 \times 10^{24} \)
(B) \( 3.01 \times 10^{24} \)
(C) \( 5.42 \times 10^{23} \)
(D) \( 5.42 \times 10^{24} \)
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