Midterm 3 Exam, Form B, CHEM 001 Spring, 2013.
(Chapters 10, 11, 12 and 14)
Name: ______________________
Date: ____________
Before attempting to answer any question(s) involving a chemical equation, please ensure the
chemical equation is balanced.
1.
What is the percent by mass of a NaCl solution, which was prepared by dissolving
37.7 g of NaCl in 100.00 g of H2O?
a) 37.7 %
b) 18.6 %
c) 74.1 %
d) 27.4 %
2. The electron configuration for a neutral O atom is …
a) 1s2 2s2 2p3
d) 1s2 2s2 2p63s2 3p3
3.
e) 1s2 2s2
they have the same number of valence electrons.
they have the same valence shells.
they have the same principle energy level.
they are in the same period.
How many moles of CO2 gas are present in a 7.26 L vessel at a pressure of
347 torr and a temperature of 25 C?
a) 0.290 mol.
5.
c) 1s2 2s2 2p2
Elements in the same group, or family have similar chemical properties because …
a)
b)
c)
d)
4.
b) 1s2 2s2 2p4
b) 0.135 mol.
c) 2.41 mol.
d) 1.38 mol.
How many milliliters of a 16.0 M HNO3 solution would be required to prepare 750.0
mL of a 0.150 M HNO3 solution?
a) 4.21 mL
b) 3.18 mL
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c) 2.67 mL
d) 7.03 mL
Midterm 3 Exam, Form B, CHEM 001 Spring, 2013.
(Chapters 10, 11, 12 and 14)
6.
How many grams of NaBr would be needed to prepare 750.00 mL of a 0.250 M NaBr
solution?
a) 10.2 g
7.
c) 12.9 g
d) 19.3 g
Which species listed below has a linear molecular shape?
a) CH4
8.
b) 11.0 g
b) CO2
c) CO3-2
d) SO2
Which series listed below is ranked in order of increasing first ionization energy?
a) Cs, K, Na, Li
b) Mg, Ca, Be, Ra
c) Al, Mg, Na, K
d) He, Ne, Kr, Ar
9.
Which ion listed below has the smallest ionic radius?
a) Cl-
10.
b) F-
c) O-2
d) N-3
How many milliliters of a 0.250 M NaOH solution will be required to completely react
with 12.74 mL of 0.250 M H2SO4?
H2SO4 (aq) +
a) 32.7 mL
NaOH (aq) 
b) 472 mL
c) 50.0 mL
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Na2SO4 (aq) +
d) 25.5 mL
H2O (aq)