Final answer:
To find the number of molecules in 2.39 moles of lead oxide, multiply the number of moles by Avogadro's number.
Step-by-step explanation:
To determine the number of molecules in a given amount of a substance, you need to use Avogadro's number, which is 6.022 × 10^23 molecules/mol.
In this case, you have 2.39 moles of lead oxide. To find the number of molecules, you multiply the number of moles by Avogadro's number:
No. of molecules = 2.39 moles x Avogadro's number
No. of molecules = 2.39 moles x (6.022 × 10^23 molecules/mol)
Calculating this, you get:
No. of molecules = 1.44 × 10^24 molecules
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