Stoichiometry - Worksheet With Answer Key Page 3
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1
2
3
4Name Answer Key
3
_22.5 L O
_
10.
Calculate the number of liters of oxygen gas needed to
2
produce 15.0 liters of Dinitrogen trioxide.
2N
+
3O
2N
O
2
2
2
3
? L
15.0 L
mol
mol
15.0 L N
O
1 mol N
O
3 mol O
22.4 L O
2
3
2
3
2
2
22.4 L N
O
2 mol N
O
1 mol O
2
3
2
3
2
Write the correct answer for each of the following statements or questions in the
blank provided. Use your book, if necessary, to find the terms that fit the
definitions.
23
Avogadro’s number?
6.02 X 10
11.
Stoichiometry
12.
the calculations of quantities in chemical reactions.
Product
13.
a substance formed in a chemical reaction.
Coefficient
14.
a number showing the relative number of moles involved in a
reaction.
Reactants
15.
the starting materials in an equation.
Mass-mass
Calculations
16.
determining the mass of products from the given mass of
reactants.
Multiple Choice
__B___17.
Which of these expressions is an incorrect interpretation of the balanced
equation?
2S
+
3O
2SO
2
3
A.
2 atoms S + 3 molecules O
2 molecules SO
2
3
B.
2 g S + 3 g O
2 g SO
2
3
C.
2 mole S + 3 mole O
2 mole SO
2
3
D.
none of the above
__C___18.
In a chemical reaction, the mass of the products:
A.
is less than the mass of the reactants.
B.
Is greater than the mass of the reactants.
C.
Is equal to the mass of the reactants.
D.
Has no relationship to the mass of the reactants.
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