H2 Answers
5
3.20 Balance the following: a) COMBUSTION C 3 H 6 + O 2 CO 2 + H 2 O 2C 3 H 6 + 9O 2 6CO 2 + 6H 2 O b) DECOMPOSITION NH 4 NO 3 N 2 O + H 2 O NH 4 NO 3 N 2 O + 2H 2 O c) COMBUSTION C 5 H 6 O + O 2 CO 2 + H 2 O C 5 H 6 O + 6O 2 5CO 2 + 3H 2 O d) COMBINATION N 2 + H 2 NH 3 N 2 + 3H 2 2NH 3 e) COMBINATION K 2 O + H 2 O KOH K 2 O + H 2 O 2KOH
Transcript of H2 Answers
3.20 Balance the following:
a) COMBUSTION
C3H6 + O2 CO2 + H2O
2C3H6 + 9O2 6CO2 + 6H2O
b) DECOMPOSITION
NH4NO3 N2O + H2O
NH4NO3 N2O + 2H2O
c) COMBUSTION
C5H6O + O2 CO2 + H2O
C5H6O + 6O2 5CO2 + 3H2O
d) COMBINATION
N2 + H2 NH3
N2 + 3H2 2NH3
e) COMBINATION
K2O + H2O KOH
K2O + H2O 2KOH
3.34
a) Mass of 5.50x10-3 moles of CdS
Cd 112
S 32
144
b) Moles of NH4Cl in 112.6g
N 14H 1 x 4 = 4 Cl 35.5
53.5
c) Molecules in 1.305 x 10-2 moles of C6H6
d) Oxygen atoms in 4.88 x 10-3 mol Al(NO3)
3.58 C6H12O6 2C2H5OH + 2CO2
a)
b) Molecule C6H12O6 C2H5OH CO2
C 12 6 72 C 12 6 24 C 12 1 12O 16 6 96 O 16 1 16 O 16 2 32H 1 12 12 H 1 6 6
Total 180 45 44
c)
3.60
a) Balance: Fe2O3 + CO Fe + CO2
Fe2O3 + 3CO 2Fe + 3CO2
b)
c)
grams Fe:
grams CO2
d)
Fe2O3 + 3CO 2Fe + 3CO2
150g + 78.9g = 104.9g +124g 228.9g = 228.9 g
