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The MOLE!
Test Description: Conversions practice
Instructions: Answer all questions to get your test result.
1) What is the molar mass of MgNO3 ?
A
86.27 mols / gram
B
166.31 grams/ 1 mole of MgNO3
C
86.27 grams/ 1 mole of MgNO3
D
162.0 grams/ 1 mole of MgNO3
2) How many atoms are in 3.1 moles of Lithium?
A
.51 x 10^-23 moles of Lithium
B
.51 x 10^-23 particles of Lithium
C
18.66 x 10^23 moles of Lithium
D
18.66 x 10^23 atoms of Lithium
3) What is the molar mass of Na(CO)2?
A
78.99 grams / 1 mole of Na(CO)2
B
35.34 grams / 1 mole of Na(CO)2
C
66.98 grams / 1 mole of Na(CO)2
D
101.80 grams / 1 mole of Na(CO)2
4) How many moles are in 2.4 x 10^15 particles of NaCl?
A
14.4 x 10^38 moles of NaCl
B
.4 x 10^-8 particles of NaCl
C
14.4 x 10^38 moles of NaCl
D
.4 x 10^-8 moles of NaCl
5) You have discovered 1 mol of an unknown substance. When you weigh the substance it weighs exactly 22.990 grams. What element have you found?
A
Na
B
Ni
C
Co
D
Ca
6) You measured an ALL copper (Cu) penny and it weighs 150 grams. How many moles of Cu are in this penny?
A
2.36 moles of Cu
B
4.63 moles of Cu
C
1.41 moles of Cu
D
9525.02 moles of Cu
7) A clown tells you he needs 15 moles of helium gas to make balloon animals. How much will that gas weigh in grams?
A
3.8 grams of Helium gas
B
90.3x10^23 moles of Helium gas
C
4.5 moles of Helium Gas
D
60.0 grams of Helium gas
8) You are trying to build a gold metal boat that weighs 125 grams. How many moles of gold (Au) do you need to build your boat?
A
24621.31 moles of Au
B
752.53 x 10^23 moles of Au
C
2.52 moles of Au
D
.63 moles of Au
9) You have 59.0 grams of calcium oxide (CaO). How many moles is this?
A
3309.1 moles of CaO
B
12 moles of CaO
C
1.05 moles of CaO
D
355.21 x 10^23 moles
10) You have a HUGE pure Aluminum (Al) sword that weighs 430 grams. How many moles of Al make up the sword?
A
11601.42 moles of Aluminum
B
15.95 moles of Aluminum
C
6.02 x 10^23 particles
D
25 moles of Aluminum
*select an answer for all questions
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