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Stoichiometry
Test Description: Basic stoichiometry, molar mass, and percent composition
Instructions: Answer all questions to get your test result.
1) How many grams are in 1.00 mole of Li?
A
6.94 mole
B
6.94 g
C
6.02 x 10^23
D
3 g
2) The molar mass of C14H14O3 is?
A
230
B
342
C
96
D
115
3) 6.02 X 10^23 is:
A
All of the above
B
A counting unit
C
Avogadro's Number
D
The number of particles in 1 mole of anything
4) How many grams are in 1.50x10^23 atoms As?
A
0.25 g
B
1.50 x 10^23 g
C
18.66 g/mol
D
18.66 g
5) How many moles are represented by 40.1 g Ca?
A
0.5
B
1
C
2
D
6.02 x 10^23
6) How many atoms are in 5.0 moles of silver?
A
1.2 x 10^24 atoms
B
3.0 x 10^24 molecules
C
3.0 x 10^24 atoms
D
3 x 10^24 atoms
7) How many moles are in 0.56 grams of potassium?
A
21.9
B
22
C
0.014
D
0.028
8) The molar mass of Ba(OH)2 is
A
308.6 g
B
155.3 g
C
154.3 g
D
171.3 g
9) What is the percent composition by mass of nitrogen in NH4NO3?
A
52.5%
B
17.5%
C
60.0%
D
35.0%
10) The gram formula mass of NH4Cl is
A
28.0 g/mo
B
22.4 g/mol
C
53.5 g/mol
D
95.5 g/mol
*select an answer for all questions
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