A nucleotide has molecular weight 300 g/mol. Find the number of molecules in 10 picomoles, expressed as a multiple of $10^{12}$ and rounded to 2 decimals.
Amount is $10\times10^{-12}$ mol. Multiplying by Avogadro’s number gives $10^{-11}(6.022\times10^{23})=6.022\times10^{12}$ molecules. The requested multiplier is 6.02. Molecular weight would be needed for a mass-to-moles conversion, but the amount is already supplied in moles.
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