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# Mole Conversions

The Mole Bridge

 How to use this mole bridge: 1. You are only allowed to go from left to right. 2. The great divide side, you will divide.  3. On the Rabittville, side you will be multiplying (rabbits multiply). Those are the rules

Mass to moles- divide by the molar mass

 36.0g H2O 36.0g H2O X 1 mole =2.00 moles water 18.0g
 66.0g CO2 66.0g CO2 X 1 mole =1.50 moles CO2 44.0g

Moles to mass- multiply by the molar mass

 5.0 Moles of He atoms 5.0 Moles X 4.00g =20.0g He atoms 1 mole 30.0 moles of H2 30.0 moles X 2.00g =60.0g of H2 1 mole

Moles to particles-multiply by Avagodro's Number

 5.0 Moles of Fe atoms 5.0 Moles X 6.02×1023 =3.0 x 1024 Fe atoms 1 mole 30.0 moles of H2 30.0 moles X 6.02×1023 =1.8 x 1025 H2 molecules 1 mole

Particles to moles-divide by Avagodro's Number

 1.8 x 1024 Donuts 1.8 x 1024 X 1 mole =3.0 moles Donuts 6.02×1023 3.0 x 1025 O2 molecules 3.0 x 1025 X 1 mole =50 moles O2 molecules 6.02×1023 5.4 x 1022 Molecules of Glucose 5.4 x 1022 X 1 mole =0.090 moles of Glucose 6.02×1023

Vol. at STP to moles-divide by 22.4L

 44.8L of Helium at STP 44.8L He X 1 mole =2.00 moles of Helium 22.4L

Moles to Volume at STP-multiply by 22.4L

 2.5 moles of H2 2.5 moles X 22.4L =  56.0L of H2 1 mole