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Molar Mass Review
Test Description: This is a review of chemical quantities and stoichiometry.
Instructions: Answer all questions to get your test result.
1) What is the molar mass of carbon?
A
12.011 grams/mol
B
35.45 grams/mol
C
40.08 grams/ moles
D
58.93 grams/mol
2) What is the molar mass of phosphorus?
A
30.97 grams/mol
B
18.99 grams/mol
C
55.85 grams/mol
D
39.09 grams/mol
3) What is the molecular weight of calcium?
A
63.55 grams/mol
B
40.08 grams/mol
C
35.45 grams/mol
D
12.011 grams/mol
4) What is the molecular weight of iodine?
A
126.905 grams/mol
B
79.904 grams/mol
C
199.22 grams/mol
D
114.82 grams/mol
5) What is the gram formula mass of carbon dioxide?
A
44.01 grams/mol
B
15.9994 grams/mol
C
12.011 grams/mol
D
28.01 grams/mol
6) What is the gram formula mass of SiBr4?
A
267.7975 grams /mol
B
187.8935 grams/mol
C
107.9895 grams/mol
D
347.7015 grams/mol
7) What is the molar mass of ammonium chloride? (Hint: Ammonium is a polyatomic ion so you won't find it on the periodic table.)
A
53.49 grams/mol NH4Cl
B
156.8 grams /mol NHCl4
C
101.9 grams/mol NH3Cl2
D
50.46 grams/mol NHCl
8) What is the gram formula mass for barium hydroxide, Ba(OH)2?
A
171.33 grams/mol
B
308.66 grams/mol
C
441.40 grams/mol
D
184.33 grams/ mol
9) What is the molecular weight of iron (III) nitrate? (Hint: Nitrate is a polyatomic ion so you won't find it on the periodic table.)
A
145.847 grams/mol
B
117.854 grams/mol
C
85.854 grams/mol
D
241.8 grams/mol
10) What is the gram formula mass of Al2(SO4)3?
A
342.14 grams/mol
B
262.14 grams/mol
C
450.06 grams/mol
D
197.96 grams/mol
*select an answer for all questions
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