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Using Avogadro’s Number 6.02 x 10 23 Use my number, I’m waiting...

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Presentation on theme: "Using Avogadro’s Number 6.02 x 10 23 Use my number, I’m waiting..."— Presentation transcript:

1 Using Avogadro’s Number 6.02 x Use my number, I’m waiting...

2 Moles vs. Molecules Mole – a counting unit equivalent to 6.02 x particles of a substance Molecule – a group of two or more atoms held together by chemical bonds that together are neutral (All compounds are molecules, but not all molecules are compounds)

3 Avogadro’s Number Use to convert from moles to molecules If molecule is a single atom molecule go directly from moles to atoms If molecule is a multi-atom molecule convert from moles to molecules then from molecules to atoms

4 What number of moles of Mg is equivalent to x atoms of Mg? *Remember* 1 mol Mg = 6.02x10 23 atoms Mg *Remember* 1 mol Mg = 6.02x10 23 atoms Mg 6.02x10 23 atoms Mg 1 mol Mg 1.806x10 24 atoms Mg = 3.0 moles ●

5 How many of moles of C 2 H 6 is 9.17 x molecules of C 2 H 6 ? 1 mol C 2 H 6 = 6.02x10 23 molecules C 2 H x10 23 molecules C 2 H 6 1 mol C 2 H x10 23 molecules C 2 H 6 = 1.52 moles ●

6 If we had 2.5 moles of sugar, how many molecules of sugar is that equal to? *Remember* 1 mol sugar = 6.02x10 23 molecules sugar *Remember* 1 mol sugar = 6.02x10 23 molecules sugar 6.02x10 23 molecules sugar 1 mol sugar 2.5 mol sugar = = = 1.51x10 24 molecules of sugar = 1.51x10 24 molecules of sugar ●

7 How many atoms of gold are in 0.75 moles of gold? 1 mol gold = 6.02x10 23 atoms gold 6.02x10 23 atoms gold 1 mol gold 0.75 mol gold = = = 4.52x10 23 atoms of gold ●


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