Transcript Slide 1

Home Work 3
Chapter 3
Dr. Ali Bumajdad
1) Balance the following equation:
C8H18 + O2
CO2 +
H2 O
2) How many moles of oxygen are needed to burn 1.80 mole C2H5OH.
3) How many moles of CO2 will be formed when 0.274 mol C2H5OH
burns.
4) How many moles of water will form when 3.66 mol CO2 are
produced during the combustion of C2H5OH ?
5)
4Al + 3 O2
2Al2O3
Calculate the number of grams of Al2O3 that could be formed if 12.5
g O2 react completely with Al.
6) 12.0 g of Zn are mixed with 6.50 g of S and allowed to react.
Zn + S
ZnS
(a) Which is the limiting reactant?
(b) How many grams of ZnS formed?
(c) How many grams of the reactant will remain unreacted?
7)
C2H4 + 3O2
2CO2 + 2H2O
How many grams of CO2 will be formed when a mixture containing 1.93
g C2H4 and 5.92 g O2 is ignited?
8) If the density of C2H5OH is 0.789 g/mL, how many mL of C2H5OH are
needed to produce 10.0 g of CO2 according to the following equation
:
C2H5OH + 3O2
 2CO2 + 3H2O