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A sample of sulfur trioxide (SO3) weighs 5100g. How many molecules are contained in this sample?


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A sample of sulfur trioxide (SO3) weighs 5100g. How many molecules are contained in this sample? Use 80.063 the molar mass of SO3. 


Use 6.022 x 1023 mol-1 for Avogadro's number. 

Report your answer in scientific notation.

Your answer should have two significant figures. 

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Ans-3.8×10^25 molecules of SO3

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