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Lujan Moles Test
Test Description: 1st Test of 9 weeks
Instructions: Answer all questions to get your test result.
1) What is the mass of 3.0 x 10 ^23 molecules of CO₂?
A
88 grams
B
44 grams
C
66 grams
D
22 grams
2) How many moles of oxygen are in 17 moles of Ba₃(PO₄)₂?
A
17 mol
B
136 mol
C
34 mol
D
102 mol
3) How many moles of Fe2O3 are in 79.85 g Fe₂O₃?
A
0.100 mol
B
0.250 mol
C
0.500mol
D
1.000 mol
4) How many helium atoms are in 6.44 E-24 g of helium?
A
2 atoms
B
1,000 atoms
C
4 atoms
D
1 atom
5) The molar mass of H₂O₂ is
A
a
B
a
C
a
D
a
6) a
A
a
B
a
C
a
D
a
7) a
A
a
B
a
C
a
D
a
8) a
A
a
B
a
C
a
D
a
9) a
A
a
B
a
C
a
D
a
10) a
A
a
B
a
C
a
D
a
*select an answer for all questions
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