Transcript 02-17 equations by mass for web

U8-4
02/17 Warm-Up
 Add
to U8-4 Unit 8 Warm-Ups
 You
may add today’s Warm-Up to the same
page as the previous one or write it on a new
sheet of paper
 Date
the assignment: 02/17/2014
 Title the assignment: Equations by Mass
 Number the page in the upper corner: U8-4
 Write the question and then write your
answer.
U8-4
Equations by Mass
1.
Balance the equation below:
___ C3H8 + ___ O2 → ___ CO2 + ___ H2O
2.
Interpret the equation in terms of mass.
3.
Show that the Law of Conservation of Mass
has been observed.
U8-4
Equations by Mass
1.
Balance the equation below:
(1) C3H8 + ___
3 CO2 + ___
4 H2O
5 O2 → ___
___
44.0 g/mol
2.
32.0 g/mol
44.0 g/mol
18.0 g/mol
Interpret the equation in terms of mass.
(1 mol C3H8)(44.0 g/mol C3H8)
+ (5 mol O2)(32.0 g/mol O2)
→ (3 mol CO2)(44.0 g/mol CO2)
+ (4 mol H2O)(18.0 g/mol H2O)
44.0 g C3H8 + 160.0 g O2 → 132.0 g CO2 + 72.0 g H2O
U8-4
Equations by Mass
3 CO2 + ___
4 H2O
5 O2 → ___
___ C3H8 + ___
44.0 g C3H8 + 160.0 g O2 → 132.0 g CO2 + 72.0 g H2O
3.
Show that the Law of Conservation of Mass
has been observed.
44.0 g C3H8 + 160.0 g O2 = 204.0 g reactants
132.0 g CO2 + 72.0 g H2O = 204.0 g products
204.0 g reactants = 204.0 g products