Question #162a7

1 Answer
Manish Bhardwaj ยท Stefan V.
Nov 25, 2014

A mole is a collection that contains 6.02 * 10^23 atoms/ molecules /ions of a substance.

1 mole of BF_3 has 6.02 * 10^23 molecules.

To calculate the number of molecules in 1.25 moles of BF_3 we will use dimensional analysis.

1.25 "moles" BF_3 * (6.022 * 10^23" molecules") / ("1 mol "BF_3)

1.25 * (6.022 * 10^23 "molecules") / 1

7.53 * 10^23 "molecules".

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