Answer:
120 moles in that sample. Take 7.12 x 10^25/ 6.02x10^23 to get that answer
Explanation:
The sample of Cl₂ containing 7.12 * 10²⁵ molecules has been equivalent to 118.21 moles.
Avogadro number is the constant that serves as the proportionality constant for the number of molecules present in a mole of a sample. The value of the Avogadro number is 6.023 * 10²³.
Thus, it can be given as:
6.023 * 10²³ molecules = 1 mole
7.12 * 10²⁵ molecules = 7.12 * 10²⁵/ 6.023 * 10²³ * 1 mole
7.12 * 10²⁵ molecules = 118.21 moles
The sample of 7.12 * 10²⁵ molecules of Cl₂ contains 118.21 moles of Cl₂.
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