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