An atom of gallium has a mass of 69.72 amu.On of its isotopes, ,has a 39.89% abundance.Since 1 amu = 1.6606 x 10^-24 g,how many atoms of this gallium isotope would be present in a 1.00 mg sample of gallium? A)3.445 x 10¹⁸ atoms B)8.637 x 10¹⁸ atoms C)2.165 x 10¹⁹ atoms D)9.501 x 10¹⁸ atoms

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The Answer of An atom of gallium has a mass of 69.72 amu.On of its isotopes, ,has a 39.89% abundance.Since 1 amu = 1.6606 x 10^-24 g,how many atoms of this gallium isotope would be present in a 1.00 mg sample of gallium? A)3.445 x 10¹⁸ atoms B)8.637 x 10¹⁸ atoms C)2.165 x 10¹⁹ atoms D)9.501 x 10¹⁸ atoms

An Atom of Gallium Has a Mass of 69