anonymous one year ago How many moles of C8H18 contain 9.25 x 1024 molecules of C8H18

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1. whpalmer4

1 mole contains $$6.022*10^{23}$$ constituent particles. If you are talking about molecules, then 1 mole contains $$6.022*10^{23}$$ molecules, and the mass of that 1 mole will be simply the molecular weight of the molecule grams. You have a different number of molecules, but want to know how many moles you have. Simply multiply your number of molecules by $$\dfrac{1 \text{ mole}}{6.022*10^{23} \text{ molecule}}$$ and the result will be the number of moles.