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Calculating and using the molar mass of heterodiatomic The chemical formula for lithium fluoride is LiF A chemist measured the amount of lithium fluoride produced during an experiment. She finds that 317. g of lithium fluoride is produced. Calculate the number of moles of lithium fluoride produced. Round your answer to 3 significant digits. mol X Explanation Check 2019 McGrawH Terms of Education All Righes Reserved

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Answer:

If you want to calculate the number of moles of any compund, you should look for the molar mass. For LiF, its molar mass is 25,9 g/m So if 25,9 g are in one mol, the 317 in how many?. Then 12,2 is the number of moles of lithium fluoride produced.

Explanation:

To get the molar mass of a compound, you should know the mass at the Periodic Table, for Li 7,00 , for F 18,9

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Answer:

[tex]\boxed{\text{12.2 mol}}[/tex]

Explanation:

[tex]\text{M$_{r} $ of LiF} = 6.94 + 19.00 = 25.94\\\text{Moles} = \text{317 g } \times \dfrac{\text{1 mol}}{\text{25.94 g}} = \text{12.2 mol}\\\\\text{The sample contains $\boxed{\textbf{12.2 mol}}$ of LiF}[/tex]

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