Name_________________________________
Chapter 12 : Calculating with Mole Ratios
Date__________________
Practice Set from the Textbook: show the set up of all problems , proper units and use 3 sig figs.
Sample set # 12.2
circle your answer
Problem #12. a
write the balanced chemical equation from problem # 11:
write the mole
ratios here for the balanced equation:
Known:_________________
Unknown:________________
need to calculate the molar mass ? Do it here:
O2:
Al:
Flow chart :
Calculate and solve the problem here :
Problem #12. b
Known:_________________
Unknown:________________
need to calculate the molar mass ? Do it here:
O2:
Flow chart :
Calculate and solve the problem here :
Al2O3:
Sample set # 12. 3
example 12.3
write the balanced chemical equation from the example problem :
write the mole
ratios here for the balanced equation:
Knowns:___________________________________
Unknown:________________
need to calculate the molar mass ? Do it here:
NH3:
Flow chart :
Calculate and solve the problem here :
Problem #13.
write the balanced chemical equation from the example problem :
write the mole
ratios here for the balanced equation:
H2:
Knowns:___________________________________
Unknown:________________
need to calculate the molar mass ? Do it here:
C2H2:
CaC2:
Flow chart :
Calculate and solve the problem here :
Problem #14.
Knowns:___________________________________
Unknown:________________
need to calculate the molar mass ? Do it here:
H2O:
Flow chart :
Calculate and solve the problem here :
Sample set # 12. 4
example 12.4
write the balanced chemical equation from the example problem :
write the mole
ratios here for the balanced equation:
Knowns:_______________
Unknown:________________
need to calculate the molar mass ? Do it here:
Nope, you better know them by now!
Flow chart :
Calculate and solve the problem here :
Problem #15.
write the balanced chemical equation from the example problem :
write the mole
ratios here for the balanced equation:
Knowns:___________________________________
Unknown:________________
need to calculate the molar mass ? Do it here:
KClO3:
Flow chart :
Calculate and solve the problem here :
Problem #16.
write the balanced chemical equation from the example problem :
write the mole
ratios here for the balanced equation:
Knowns:___________________________________
Unknown:________________
need to calculate the molar mass ? Do it here:
NO2:
Flow chart :
Calculate and solve the problem here :
NO: