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How many moles are in #4.5 xx 10^24# molecules of sodium fluoride, NaF?

Answer 1

Mateo Aguilar

7.5 moles

This quantity is compared to one mole of the substance.

1 mole of substance (NaF) has #6.022 xx 10^23 # molecules.

No. of moles #=( 4.5xx10^(24)cancel"molecules")/(6.022xx10^23 cancel("molecules")/"mol")=7.5 "moles"#

Note: NaF is not a molecular compound; rather, it is an ionic compound.

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Answer 2

Cooper Anderson

To find the number of moles, divide the number of molecules by Avogadro's number, which is approximately (6.022 \times 10^{23}) molecules/mol.

(4.5 \times 10^{24}) molecules of NaF / (6.022 \times 10^{23}) molecules/mol ≈ 7.48 moles

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.