Javerlyn Walls

Amanda Hodge

Sergio Camacho

• A branch of chemistry that deals with the

relative quantities of reactions and products in

chemical reactions.

(Balancing Equations)

Stoichiometry

–Step one: Analyze the question• What is it asking?

–How many grams of H2O after reaction.

–Step three: Write the Formula.

C3H8 + O2 CO2 + H2O

Step Five is a long Process

– Step five: Determine the number of batches in Propane.

• Write the formula for propane–

• Determine the molar mass.– C = 12 ; C3 = 36

– H = 8 ; H = 8

– 36+8 = 44. Molar mass = 44.

• Divide the total grams by the molar mass.– 165

44 3.75 batches

C3H8

Ca

lcula

tin

g M

oles

Final Steps.

– Step Seven: Determine the molar mass of Water.

• Write the formula.

–

• Solve for the molar mass.– H = 1 . 1 X 2 = 2

– O = 16.

– 2 + 16 = 18. The molar mass is 18

– Step eight: Determine the overall mass.

• Multiply.

H2O

15 18 270

How many grams of water do you get

from the combustion of 165 grams of

propane?