Chem 1010
Authored by Patricia Ethington
Specialty
University
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97 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The reaction of 25 mL of N2 gas with 75 mL of H2 gas to form ammonia via the equation: N2 (g) + 3H2 (g) → 2NH3 (g)will produce ________ mL of ammonia if pressure and temperature are kept constant.
100
250
150
50
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The formula of nitrobenzene is C6H5NO2. The molecular weight of this compound is ________ g/mol.
109.1
3.06
43.03
123.11
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The mass % of C in methane (CH4) is ________.
92.26
133.6
7.743
74.87
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate the percentage by mass of nitrogen in PtCl2(NH3)2.
4.95
9.9
4.67
9.34
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A 30.5 gram sample of glucose (C6H12O6) contains ________ mol of glucose.
5.9
0.169
0.136
0.424
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A nitrogen oxide is 63.65% by mass nitrogen. The molecular formula could be ________.
NO2
N2O4
NO
N2O
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
There are ________ mol of carbon atoms in 4 mol of C4H8O2.
20
16
8
4
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