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Calculate the number of molecules in (5.47x10^1) grams of sulfur trioxide, SO3. Provide your answer to...


Calculate the number of molecules in (5.47x10^1) grams of sulfur trioxide, SO3. Provide your answer to the correct number of
Calculate the number of molecules in (5.47x10^1) grams of sulfur trioxide, SO3. Provide your answer to the correct number of significant figures and without units.
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Answer #1

Molecular mass of SO3 = 80.066g /mol

Now for (5.47 × 10 ^1)g of SO3 number of moles = 54.7g/80.066g/mol

= 0.683mol

Thus number of molecule = number of moles × Avogadro Number

= 0.683 × 6.022 × 1023

= 4.11 × 1023 molecules

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