Unit 4 Lesson 11

Mass-Mole Conversions

You have to convert mass into moles to find out the number of molecules/atoms

• Mass of the number of moles is atomic mass • number of moles
• # of mols of Carbon in 3.0 mol of C9H8O4?

- 27 mol of Carbon because 9 mol of carbon times 3.0 mol of the compound is 9 • 3 = 27 mol.
# of moles of H in 160g of NH3?

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