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It depends on the substance and its molar mass.

In order to convert from grams to formula units, you must first convert grams to moles, then moles to formula units (grams --> moles --> formula units).

1. Divide the mass (g) of the given substance by the substance's molar mass.

2. Multiply the number of moles found in Step 1 (above) by Avogadro's number (6.022 x 1023).

---- Mass substance ----- X 6.022 x 1023 formula units

Molar mass substance

CONVERSION FACTOR

47.63g substance x 1 mol substance ---- x ----- Avogadro's number

///////////////////// molar mass (g) substance ////// 1 mol substance

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Q: How many formula units in 47.63 grams?
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