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Title: general chemistry exam with answers
Description: chemistry exam with answers
Description: chemistry exam with answers
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Part I
...
Which of the following is not a homogenous mixture?
air
opper
brass
D)
1
...
What mass of CaCh is required to prepare 500
...
200 M solution of CaCh?
A)0
...
I00g
22
...
I g
none of the above
3
...
014 g, 30
...
001 g, 30
...
Given the choices below, what is the best way to report the mass?
A)30
...
0? I g
8)30
...
012g
30
...
0g
4
...
When the reaction is balanced with integer
coefficients, what is the coefficient in front of 0 2?
C6H 1404
+
02
➔
H20
+
CO2
A)6
�12
(9)15
D) 14
E)none of the above
5
...
The formula of a salt is XCh
...
The metal Xis?
@zn
8) Cu
C)Fe
D)Co
E) Ni
7
...
90509 amu) and 109Ag (108
...
The
average atomic mass of silver is 107
...
The fractional abundance of 107Ag is:
A) 0
...
7578
...
2422
(Q2)l
...
9047
Part II
...
Complete the following table (all empty cells):
FORMULA
NAME
A-\ �(S04j 3
Aluminum sulfate
\'\,i
k-o Y"'-
+v-:: od
...
Nl3
rY\9- co '),
Magnesium carbonate
·(V\ a
...
__,
9
...
Maleic acid, which is used to manufacture aiiificial resins, has the empirical formula CHO
...
1 g/mol
...
•
�
vv1
...
e
...
u
...
r
4- ><- CcJ-\--o)
\
r
::::
-f-ex\/Vl l �
\
...
( '4 \-\ 'i O '-t
...
A piece of nickel with a mass of 48
...
00 cm3 of water in a graduated
cylinder
...
40 cm3 • The correct value for the density of nickel from
these data is:
;:
...
The structural formula for the compound guanidine is shown below:
guanidine
a) What is the molar mass of guanidine?
l�
...
Dt:Y-2?)+ 'S"1'-
...
t-
...
4
...
\ a O
51
...
13
...
List the species that are
present (ions, compounds, etc
...
Include
the phases for the species present
...
Equal volumes of a 1
...
0 M magnesium chloride (aq)
1
...
0 M Ci-(aq)
Mg3(PO4)i (s)
0
...
The valuable compound diborane, B 2H6, can be made by the following (unbalanced) reaction
...
203 g ofNaBH4 and 7
...
What is your theoretical yield ofB2H6 (in grams)?
\
�0 \
b\J OL
'6 \-h-(
X
31- -3)L?<-'-'B�
...
0 ( S-'T O )
:J
...
0
S-0 ;) $ 2
X
\ VVl e '2s--"5 -�
Iz
2) s2
b) Ifyou isolate 0
...
43q4J
'I--
(0()';,
\'v''-o\
(32--�
k--
\
...
6 � \ ; vvc;-h\-u�
15
...
You run combustion analysis on 4
...
481 g of CO2 and 0
...
a) What is the empirical formula of styrene?
l
...
_0__C
\ _D2-_·
X: · __
t/:tf
...
o 1:r3 \-\ z_a
'YYt
...
::2 �0l ·�
\
t'Z>, O t(::;
VV/
...
u \
O, Q:ssGS- 'JVle(
0' C) DLJ
2-'
1'V1B(
� Q -
0 3 5 (ol{ wz_o (
...
�----
Title: general chemistry exam with answers
Description: chemistry exam with answers
Description: chemistry exam with answers