indetify the number of atoms in molecule
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A mole is Avogadro's number of items: 6.022 × 1023. This number is in scientific notation and denotes that there are 23 places to the right of the decimal point, or 602,200,000,000,000,000,000,000. However, a mole is 6.022 × 1023 of anything: 1 mole of Ca atoms = 6.022 × 1023 Cu atoms.
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Chemists generally use the mole as the unit for the number of atoms or molecules of a material. One mole (abbreviated mol) is equal to 6.022×1023 molecular entities (Avogadro's number), and each element has a different molar mass depending on the weight of 6.022×1023 of its atoms (1 mole).
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