How many silicon atoms (Si)are contained in a 12.5 g sample of silicon? A) 2.68 * 10²³ B) 5.83 *10^-22 C) 1.35 *10²⁴ D) 1.71 * 10²¹

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To find the number of silicon atoms, first calculate the number of moles of silicon in 12.5 g using its molar mass (approximately 28.09 g/mol). Then, multiply the moles by Avogadro's number (6.022 x 10^23 atoms/mol) to find the number of atoms. This calculation results in approximately 2.68 x 10^23 silicon atoms.

How Many Silicon Atoms (Si)are Contained in a 12