{Mole To Mole Ratios

Los Altos ChemistryMr. Darren Dressen

Today’s Warm UP

Typical Recipe for Chocolate Chip Cookies

3 cups flour + 2 cups sugar + 2 eggs 4 dozen cookies

Could you modify these ingredients to make a dozen cookies? What would you do? How would you modify recipe to make one cookie?

1 CaSO4 + 1 BaCl2 1 CaCl2 + 1 BaSO4

__ CaSO4 + __BaCl2 __CaCl2 + __BaSO4

__ CaSO4 + __BaCl2 __CaCl2 + __BaSO4

____CaSO4 + ____BaCl2 ____ CaCl2 + ____BaSO4

10

10

10

10

0.5 0.50.5 0.5

5.65 x 10-25.65 x 10-25.65 x 10-25.65 x 10-2

2 H2 + 1 O2 2 H2O

__ H2 + __O2 __H2O

4 2 4

5

0.064

__ H2 + __O2 __ H2O __ H2 + __O2 __ H2O

5

2.5

0.064 0.032

___C4H10 + ____O2 ____CO2 + ____H2O

13 82 10

How many moles of butane, C4H10, are needed to react with 5.5 moles of O2?

___C4H10 + ___O2 ___CO2 + ____H2O 5.5X

5.5 moles of O2 13 moles of

O2

2 moles of C4H10

=0.85 moles C4H10

___C4H10 + ____O2 ____CO2 + ____H2O

13 82 10

How many moles of butane, C4H10, are needed to react with 5.5 moles of O2?

___C4H10 + ___O2 ___CO2 + ____H2O 5.50.85

5.5 moles of O2 13 moles of

O2

2 moles of C4H10

=0.85 moles C4H10