One mole of carbon-12 has a mass of 12.00 grams. What is the mass of a ¹²C atom? A) 1.244 × 10⁻²⁶ kg B) 1.993 × 10⁻²⁶ kg C) 2.032 × 10⁻²⁶ kg D) 2.440 × 10⁻²⁶ kg E) 3.000 × 10⁻²⁶ kg

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Quizplus · Accepted Answer

The mass of one mole of carbon-12 atoms is 12.00 grams, which is equivalent to 12 grams/mole. Since one mole contains Avogadro's number of atoms (approximately 6.022 × 10^23 atoms/mole), the mass of a single carbon-12 atom can be calculated by dividing the molar mass by Avogadro's number. This calculation gives a mass of approximately 1.993 × 10^-26 kg per carbon-12 atom.

One Mole of Carbon-12 Has a Mass of 12