That would be 8.25*10^19/6.025*10^23 = 1.369*10^-4 moles. The denominator is Avogadro's number.
The molar mass (which was called the molecular weight when I studied chem long ago)of UF6 is 238+(6x19) = 352 g/mole. Multiply those numbers together for the answer.
What is the mass of 8.25 * 10^19 UF6 molecules?
2 answers
just to clarify the numbers to multiply.
352 g/mol x 1.369*10^-4 mols = ?? grams
352 g/mol x 1.369*10^-4 mols = ?? grams
1 answer