Transcript You are given an aqueous solution that contains a Co 2

6.1
How many moles of Ca are 3.01 x 1023 atoms of
calcium?
1.
2.
3.
4.
5.
Tro IC3
3.01
mol
1.81 x 1047 mol
1.00
mol
0.500
mol
3.01 x 1023 mol
6.1
How many moles of Ca are 3.01 x 1023 atoms of
calcium?
1.
2.
3.
4.
5.
Tro IC3
3.01
mol
1.81 x 1047 mol
1.00
mol
0.500
mol
3.01 x 1023 mol
6.2
Which of the following statements is correct?
1.
2.
3.
4.
5.
Tro IC3
1 mol of C = 12.01 amu
1 mol of C = 12.01 g
1 mol of C = 6.022 x 1023 atoms
Two of the above
All of the above
6.2
Which of the following statements is correct?
1.
2.
3.
4.
5.
Tro IC3
1 mol of C = 12.01 amu
1 mol of C = 12.01 g
1 mol of C = 6.022 x 1023 atoms
Two of the above
All of the above
6.3
How many grams are in 1.000 mol of iron?
1.
2.
3.
4.
5.
Tro IC3
1.000
g
6.022 x 1023 g
0.01791
g
26.00
g
55.85
g
6.3
How many grams are in 1.000 mol of iron?
1.
2.
3.
4.
5.
Tro IC3
1.000
g
6.022 x 1023 g
0.01791
g
26.00
g
55.85
g
6.4
What is the formula mass of ammonium nitrate?
1.
2.
3.
4.
5.
Tro IC3
112.12 amu
80.06 amu
66.04 amu
114.00 amu
95.23 amu
6.4
What is the formula mass of ammonium nitrate?
1.
2.
3.
4.
5.
Tro IC3
112.12 amu
80.06 amu
66.04 amu
114.00 amu
95.23 amu
6.5
How many moles of Pt are in a 455 mg ring of pure
platinum?
1.
2.
3.
4.
5.
Tro IC3
2.33
mol
2.33 x 103 mol
2.33 x 10-3 mol
8.88 x 104 mol
88.8
mol
6.5
How many moles of Pt are in a 455 mg ring of pure
platinum?
1.
2.
3.
4.
5.
Tro IC3
2.33
mol
2.33 x 103 mol
2.33 x 10-3 mol
8.88 x 104 mol
88.8
mol
6.6
What is the mass of 4.55 x 1023 copper atoms?
1.
2.
3.
4.
5.
Tro IC3
4.55
g
1.74 x 1049 g
63.6
g
6.02 x 1023 g
48.0
g
6.6
What is the mass of 4.55 x 1023 copper atoms?
1.
2.
3.
4.
5.
Tro IC3
4.55
g
1.74 x 1049 g
63.6
g
6.02 x 1023 g
48.0
g
6.7
How many moles of formula units are in 5.67 g of
iron(III) sulfate?
1.
2.
3.
4.
5.
Tro IC3
3.73 x 10-2 mol
2.15 x 10-2 mol
2.27 x 10-3 mol
5.67 x 10-3 mol
1.42 x 10-2 mol
6.7
How many moles of formula units are in 5.67 g of
iron(III) sulfate?
1.
2.
3.
4.
5.
Tro IC3
3.73 x 10-2 mol
2.15 x 10-2 mol
2.27 x 10-3 mol
5.67 x 10-3 mol
1.42 x 10-2 mol
6.8
How many carbon atoms are in 2.56 μg of graphite
(pure carbon)?
1.
2.
3.
4.
5.
Tro IC3
1.28 x 1017 atoms
2.45 x 1022 atoms
2.95 x 1022 atoms
2.56 x 1021 atoms
6.02 x 1023 atoms
6.8
How many carbon atoms are in 2.56 μg of graphite
(pure carbon)?
1.
2.
3.
4.
5.
Tro IC3
1.28 x 1017 atoms
2.45 x 1022 atoms
2.95 x 1022 atoms
2.56 x 1021 atoms
6.02 x 1023 atoms
6.9
How many moles of formula units are in 5.6 g of
lithium nitride?
1.
2.
3.
4.
5.
Tro IC3
0.27
mol
0.20
mol
0.16
mol
0.56
mol
2.0 x 102 mol
6.9
How many moles of formula units are in 5.6 g of
lithium nitride?
1.
2.
3.
4.
5.
Tro IC3
0.27
mol
0.20
mol
0.16
mol
0.56
mol
2.0 x 102 mol
6.10
How many formula units are in 2.45 g of chalk
(calcium carbonate)?
1.
2.
3.
4.
5.
Tro IC3
2.45 x 1022 formula units
1.47 x 1022 formula units
2.95 x 1022 formula units
1.47 x 1021 formula units
6.02 x 1023 formula units
6.10
How many formula units are in 2.45 g of chalk
(calcium carbonate)?
1.
2.
3.
4.
5.
Tro IC3
2.45 x 1022 formula units
1.47 x 1022 formula units
2.95 x 1022 formula units
1.47 x 1021 formula units
6.02 x 1023 formula units
6.11
How many moles of oxygen are in 3.45 mol of
diphosphorus pentoxide?
1.
2.
3.
4.
5.
Tro IC3
6.90 mol O
3.45 mol O
5.75 mol O
13.5 mol O
17.3 mol O
6.11
How many moles of oxygen are in 3.45 mol of
diphosphorus pentoxide?
1.
2.
3.
4.
5.
Tro IC3
6.90 mol O
3.45 mol O
5.75 mol O
13.5 mol O
17.3 mol O
6.12
How many grams of oxygen are in 40.1 g of
calcium hydroxide?
1.
2.
3.
4.
5.
Tro IC3
8.64 g
20.1 g
17.3 g
11.2 g
0.541 g
6.12
How many grams of oxygen are in 40.1 g of
calcium hydroxide?
1.
2.
3.
4.
5.
Tro IC3
8.64 g
20.1 g
17.3 g
11.2 g
0.541 g
6.13
How many molecules are there in 5.50 mL of
ethanol (C2H5OH)? (Note: dethanol = 0.789 g/cm3.)
1.
2.
3.
4.
5.
Tro IC3
5.67 x 1022 molecules
7.19 x 1022 molecules
6.02 x 1023 molecules
5.50 x 1023 molecules
3.31 x 1024 molecules
6.13
How many molecules are there in 5.50 mL of
ethanol (C2H5OH)? (Note: dethanol = 0.789 g/cm3.)
1.
2.
3.
4.
5.
Tro IC3
5.67 x 1022 molecules
7.19 x 1022 molecules
6.02 x 1023 molecules
5.50 x 1023 molecules
3.31 x 1024 molecules
6.14
What is the mass of 5.66 mol of dinitrogen
tetrahydride?
1.
2.
3.
4.
5.
Tro IC3
90.7 g
0.177 g
5.66 g
181 g
0.353 g
6.14
What is the mass of 5.66 mol of dinitrogen
tetrahydride?
1.
2.
3.
4.
5.
Tro IC3
90.7 g
0.177 g
5.66 g
181 g
0.353 g
6.15
How many moles of molecules are in 1.29 g of
liquid bromine?
1.
2.
3.
4.
5.
Tro IC3
0.00807 mol
0.0161 mol
1.29
mol
103
mol
206
mol
6.15
How many moles of molecules are in 1.29 g of
liquid bromine?
1.
2.
3.
4.
5.
Tro IC3
0.00807 mol
0.0161 mol
1.29
mol
103
mol
206
mol
6.16
What is the mass of 4.57 x 1021 molecules of
ammonia?
1.
2.
3.
4.
5.
Tro IC3
0.457 g
4.57
g
0.129 g
0.137 g
0.00759 g
6.16
What is the mass of 4.57 x 1021 molecules of
ammonia?
1.
2.
3.
4.
5.
Tro IC3
0.457 g
4.57
g
0.129 g
0.137 g
0.00759 g
6.17
How many moles of sodium are in 5.29 x 1022
formula units of sodium sulfate?
1.
2.
3.
4.
5.
Tro IC3
2
mol
0.0878
mol
0.00878
mol
1.06 x 1023 mol
0.176
mol
6.17
How many moles of sodium are in 5.29 x 1022
formula units of sodium sulfate?
1.
2.
3.
4.
5.
Tro IC3
2
mol
0.0878
mol
0.00878
mol
1.06 x 1023 mol
0.176
mol
6.18
How many moles of oxygen are in one mole of
aluminum carbonate?
1.
2.
3.
4.
5.
Tro IC3
1 mol O
3 mol O
6 mol O
9 mol O
12 mol O
6.18
How many moles of oxygen are in one mole of
aluminum carbonate?
1.
2.
3.
4.
5.
Tro IC3
1 mol O
3 mol O
6 mol O
9 mol O
12 mol O
6.19
An unknown compound has a molar mass of 118.10
g/mol. Given the following mass percent composition:
40.7% C, 5.13% H, and 54.2% O, calculate the
empirical and molecular formula, respectively.
1.
2.
3.
4.
5.
Tro IC3
CH1.5O and C2H3O2
C3H5O3 and C6H10O6
C4H6O4 and C8H12O8
C4H6O4 and C2H3O2
C2H3O2 and C4H6O4
6.19
An unknown compound has a molar mass of 118.10
g/mol. Given the following mass percent composition:
40.7% C, 5.13% H, and 54.2% O, calculate the
empirical and molecular formula, respectively.
1.
2.
3.
4.
5.
Tro IC3
CH1.5O and C2H3O2
C3H5O3 and C6H10O6
C4H6O4 and C8H12O8
C4H6O4 and C2H3O2
C2H3O2 and C4H6O4
6.20
What is the molar mass of sucrose, C12H22O11?
1.
2.
3.
4.
5.
Tro IC3
380.3 g/mol
182.3 g/mol
342.3 g/mol
129.0 g/mol
145.5 g/mol
6.20
What is the molar mass of sucrose, C12H22O11?
1.
2.
3.
4.
5.
Tro IC3
380.3 g/mol
182.3 g/mol
342.3 g/mol
129.0 g/mol
145.5 g/mol
6.21
What is the mass percent of oxygen in caffeine,
C8H10N4O2?
1.
2.
3.
4.
5.
Tro IC3
8.23 %
16.5 %
28.9 %
5.21 %
49.5 %
6.21
What is the mass percent of oxygen in caffeine,
C8H10N4O2?
1.
2.
3.
4.
5.
Tro IC3
8.23 %
16.5 %
28.9 %
5.21 %
49.5 %
6.22
What is the empirical formula of ascorbic acid,
C6H8O6, a compound found in citrus fruits?
1.
2.
3.
4.
5.
Tro IC3
C6H8O6
C4H4O4
C3H4O3
CHO
CH2O
6.22
What is the empirical formula of ascorbic acid,
C6H8O6, a compound found in citrus fruits?
1.
2.
3.
4.
5.
Tro IC3
C6H8O6
C4H4O4
C3H4O3
CHO
CH2O
6.23
Identify the diatomic molecule that has a mass of
33.86 g and contains 0.891 moles of molecules.
1.
2.
3.
4.
5.
Tro IC3
H2
N2
O2
F2
Cl2
6.23
Identify the diatomic molecule that has a mass of
33.86 g and contains 0.891 moles of molecules.
1.
2.
3.
4.
5.
Tro IC3
H2
N2
O2
F2
Cl2
6.24
Calculate the empirical formula of a 5.85 g oxide
sample of chromium containing 4.00 g of chromium.
1.
2.
3.
4.
5.
Tro IC3
Cr2O7
Cr2O4
CrO
CrO1.5
Cr2O3
6.24
Calculate the empirical formula of a 5.85 g oxide
sample of chromium containing 4.00 g of chromium.
1.
2.
3.
4.
5.
Tro IC3
Cr2O7
Cr2O4
CrO
CrO1.5
Cr2O3
6.25
What is the empirical formula of a compound that
contains 14.5% hydrogen and 85.5% carbon by
mass?
1.
2.
3.
4.
5.
Tro IC3
CH
CH2
C2H
C2H3
CH3
6.25
What is the empirical formula of a compound that
contains 14.5% hydrogen and 85.5% carbon by
mass?
1.
2.
3.
4.
5.
Tro IC3
CH
CH2
C2H
C2H3
CH3