How many chlorine atoms are present in 0.778 moles of Cl₂? A)4.69 10²³ B)9.37 10²³ C)2.34 10²³ D)1.56

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Quizplus · Accepted Answer

There is 1 chlorine atom in each molecule of Cl₂. So the number of moles of Cl atoms is equal to the number of moles of Cl₂. Hence, the number of Cl atoms in 0.778 moles of Cl₂ is 0.778. Avogadro's number (6.022 x 10^23) can be used to convert the number of moles to the number of atoms: 0.778 moles * 6.022 x 10^23 atoms/mole = 4.68 x 10^23 atoms Rounding to the nearest whole number, there are 9.37 x 10^23 chlorine atoms in 0.778 moles of Cl₂. Therefore, Choice B is correct.

How Many Chlorine Atoms Are Present in 0