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MULTIPLE CFIOICE. Choose the one altemative that best completes the statement or
1)
answers the quesrion.
How many eggs are needed to make 1 dozen waffles, assuming you have enough of all other ingredients?
Given: 2 cupsflour + 3 eggs+ 1 tbs oil- 4waffles
A) 48
B) e
q72
D)
16
E) not enough information
2) How many moles of water are made from the reaction of 1.4 moles of hydrogen gas?
Given the reaction: 2H2 + 02
-
2H2O
A) 2.8
B) 0.7
q
1.4
D) 2.1
E) not enough information
3) How many moles of sodium metal are needed to make 3.6 moles of sodium chloride?
Given the reaction: 2Na + Cl2 -- 2NaCl
A) 0.e
B) 7.2
q
1.8
D) 3.6
E) not enough information
4) How many grams of water are made from the reaction
Given the reaction: 2H2+
A)
02-
ol
76.0 grams of oxygen gas?
2H2O
18
B) e
q36
D)
16
E) not enough information
5) How many grams of sodium metal are needed to make 29.3 grarns of sodium chloride?
Given the reaction: 2Na + Cl2
A) 46.0
B) 5.75
C) 23.0
D) 11.s
E) not enough information
-
2NaCl
6) Given that 4
NH3
+5
02 -
4 NO + 6H2O, if 3.00 mol NH3 were made to react
with excess of oxygen gas, the
amount of H2O formed would be,
A) 2.00 mol
B) 3.00 mol
Q 4.50 mol
D) 6.00 mol
E) none of the above
ingredient is the limiting reactant if you have 6 cups of flour,
Civen: 2 cupsflour + 3 eggs+ 1 tbs oil - 4waffles
7) V\4rich
9 eggs and 2 tbs of oil?
A) flour
B) eggs
Q oil
D) waffles
E) not enough information
8) \A4rat is the theoretical
Given: 2 cupsflour
A) 10
yield of waffles if you have 5 cups of flour, 9 eggs and 3 tbs of oil?
oil - 4waffles
+ 3 eggs+ 1 tbs
B) 72
q8
D)4
E) not enough information
9) How many grams of calcium phosphate are theoretically produced if we start
with 3.40 moles of Ca(NO3)2 and
2.40 moles of Li3PO4?
Reaction: 3Ca(NO3)2 + 2Li3PO4
-
6LNO3 + Ca3(POa)2
A) 310
B) 248
q
10s4
D) 351
E) not enough information
10)
How many grams of NO2 are theoretically produced if we start with
Reaction:
S+
6HNO3
-
1.20 moles of S and 9.90 moles of
HNOrz
HZSO4+ 6NO2 + 2H2O
A) 7.20
B) 331
q
4s5
D)
786
E) not enough information
11)
How many grams of water are theoretically produced for the following reaction given we have 2.6 moles of HCl
and 1.4 moles of Ca(OH)2?
Reaction: 2HCl + Ca(OH)2
-
A) 2s.2
B) 50.4
g
46.8
D)
103.6
E) not enough information
2HZO + CaCl2
limiting reactant for the reaction below given that you start with 10.0 g of Al and 19.0 grams of 02?
Reaction: 4Al + 3O2 - 2AI2O3
12) What is the
Al
B) oz
Q Al2O3
A)
D) both Al and 02
E) not enough information
13) \Alhich is the
limiting reactant in the following reaction given that you start with 15.5 g of Na2S and12.1 g
CuSO4?
Reaction: Na2S + CuSO4
-
Na2SO4 + CUS
A) Na2S
B) CuSOa
Q
Na2SOa
D) CuS
E) not enough information
14) \t\4rich is the
limiting reactant in the following reaction given that you start with 42.0 g of CO2 and99.9 g KOH?
Reaction: CO2 + 2KOH
-
K2CO3 + H2O
A) K2CO3
H2o
Q coz
B)
D) KOH
E) not enough information
TRUE/FAISE. Mark'A'if
the starement is true and
'B'if
the smtement is false.
recipe: 2 cups flour + 1 egg + 3 ozblueberries
You can make 1 dozen muffins from 3 eggs.
15) Given the
16) Civen the
reaction:
2 Na(s) + Cl2(g)
-
Z
-
4 muffins.
NaCl(s)
The conversion factor for chlorine gas to sodium chloride is: 1 mol Cl2=2 mol NaCl
if
Given the chemical equation: 2 Ca + 02
if
2 moles of CaO are formed
-
2 CaO,
in this reactiory then 2 moles of 02 must have reacted.
18) The
limiting reactant is the reactant that produces the maximum amount of product.
19) The
limiting reactant is the product that is completely consumed in a chemical reaction.
20)
Giventherecipe: 2 cupsflour+ l egg+ 3 ozblueberries- 4muffins
If you have 9 cups of flour, 4 eggs and plenty of blueberries, the theoretical yield of muffins is 16.
Answer Key
Testname: HONORS CHEMISTRY - REACTION STOICHIOMETRY PRACTICE EXAM
1)B
2)c
3)D
4)A
s) D
c
7)c
6)
s) A
e) D
10) B
11) c
72) A
13) B
14) D
15) TRUE
16) TRUE
17)FAIJE
18) FAIJE
19) FAISE
20) TRUE