WorksheetsUnit 6 Review
Total questions: 27
Worksheet time: 55mins
What is the molar mass of sodium (Na)?
11 g/mol
22.99 g/mol
45.98 g/mol
3 g/mol
Fluorine is diatomic. What is the molar mass of fluorine gas?
19.00 g/mol
38.00 g/mol
9 g/mol
18 g/mol
What is the mass of one mole of aluminum (Al)?
26.98 g
13 g
53.96 g
14 g
What is the molar mass of table salt (NaCl)?
116.88 g/mol
35.45 g/mol
22.99 g/mol
58.44 g/mol
What is the molar mass of B2(CO3)3?
81.63 g/mol
94.84 g/mol
38.82 g/mol
201.65 g/mol
How many moles are in 16.94g of water (H2O)?
16.94
0.940
305.3
1.064
Which of the following would have the highest mass?
0.75 mol Co3(PO4)2
12 mol CH4
16.2 mol Cl2
1.2 mol IrI3
How many grams would 4.13x1021 molecules of diatomic nitrogen gas weigh?
0.096
0.192
14.01
28.02
What is the empirical formula of the following molecular formula: C3H6 ?
C3H6
CH2
C2H4
CH3
Which one is an empirical formula?
H2O2
C2H6O12
CaCl2
N2O8
Find the percent composition by mass of N2S2.
N: 69.6% S: 30.4%
N: 25.4% S: 74.6%
N: 96.6% S: 3.4%
N: 30.4% S: 69.6%
A formula with the lowest whole-number ratio of elements in a compound is called
Molecular Formula
Chemical Formula
Empirical Formula
Distance Formula
What is the mass percent of iron in iron(III) oxide?
30%
70%
40%
60%
N3O3
Empirical formula
Molecular formula
Both
T/F
A compound's molecular formula can be the same as its empirical formula
True
False
What is the empirical formula for C3H8 ?
CH
C3H8
C6H16
CH2.7
Given the following mass percents: 42.07% Na, 18.89% P, and 39.04% O, determine the empirical formula.
NaPO2
Na2PO3
Na3PO4
NaPO4
