Tro IC3

1. 3.01 mol2. 1.81 x 1047 mol3. 1.00 mol4. 0.500 mol5. 3.01 x 1023 mol

6.1 How many moles of Ca are 3.01 x 1023 atoms of calcium?

Tro IC3

1. 3.01 mol2. 1.81 x 1047 mol3. 1.00 mol4. 0.500 mol5. 3.01 x 1023 mol

6.1 How many moles of Ca are 3.01 x 1023 atoms of calcium?

Tro IC3

1. 1 mol of C = 12.01 amu2. 1 mol of C = 12.01 g3. 1 mol of C = 6.022 x 1023 atoms 4. Two of the above5. All of the above

6.2 Which of the following statements is correct?

Tro IC3

1. 1 mol of C = 12.01 amu2. 1 mol of C = 12.01 g3. 1 mol of C = 6.022 x 1023 atoms 4. Two of the above5. All of the above

6.2 Which of the following statements is correct?

Tro IC3

1. 1.000 g2. 6.022 x 1023 g3. 0.01791 g 4. 26.00 g5. 55.85 g

6.3 How many grams are in 1.000 mol of iron?

Tro IC3

1. 1.000 g2. 6.022 x 1023 g3. 0.01791 g 4. 26.00 g5. 55.85 g

6.3 How many grams are in 1.000 mol of iron?

Tro IC3

1. 112.12 amu2. 80.06 amu3. 66.04 amu4. 114.00 amu5. 95.23 amu

6.4 What is the formula mass of ammonium nitrate?

Tro IC3

1. 112.12 amu2. 80.06 amu3. 66.04 amu4. 114.00 amu5. 95.23 amu

6.4 What is the formula mass of ammonium nitrate?

Tro IC3

1. 2.33 mol2. 2.33 x 103 mol3. 2.33 x 10-3 mol4. 8.88 x 104 mol5. 88.8 mol

6.5 How many moles of Pt are in a 455 mg ring of pure platinum?

Tro IC3

1. 2.33 mol2. 2.33 x 103 mol3. 2.33 x 10-3 mol4. 8.88 x 104 mol5. 88.8 mol

6.5 How many moles of Pt are in a 455 mg ring of pure platinum?

Tro IC3

1. 4.55 g2. 1.74 x 1049 g3. 63.6 g 4. 6.02 x 1023 g5. 48.0 g

6.6 What is the mass of 4.55 x 1023 copper atoms?

Tro IC3

1. 4.55 g2. 1.74 x 1049 g3. 63.6 g 4. 6.02 x 1023 g5. 48.0 g

6.6 What is the mass of 4.55 x 1023 copper atoms?

Tro IC3

1. 3.73 x 10-2 mol2. 2.15 x 10-2 mol3. 2.27 x 10-3 mol4. 5.67 x 10-3 mol5. 1.42 x 10-2 mol

6.7 How many moles of formula units are in 5.67 g of iron(III) sulfate?

Tro IC3

1. 3.73 x 10-2 mol2. 2.15 x 10-2 mol3. 2.27 x 10-3 mol4. 5.67 x 10-3 mol5. 1.42 x 10-2 mol

6.7 How many moles of formula units are in 5.67 g of iron(III) sulfate?

Tro IC3

1. 1.28 x 1017 atoms2. 2.45 x 1022 atoms3. 2.95 x 1022 atoms4. 2.56 x 1021 atoms5. 6.02 x 1023 atoms

6.8 How many carbon atoms are in 2.56 μg of graphite (pure carbon)?

Tro IC3

1. 1.28 x 1017 atoms2. 2.45 x 1022 atoms3. 2.95 x 1022 atoms4. 2.56 x 1021 atoms5. 6.02 x 1023 atoms

6.8 How many carbon atoms are in 2.56 μg of graphite (pure carbon)?

Tro IC3

1. 0.27 mol2. 0.20 mol3. 0.16 mol4. 0.56 mol5. 2.0 x 102 mol

6.9 How many moles of formula units are in 5.6 g of lithium nitride?

Tro IC3

1. 0.27 mol2. 0.20 mol3. 0.16 mol4. 0.56 mol5. 2.0 x 102 mol

6.9 How many moles of formula units are in 5.6 g of lithium nitride?

Tro IC3

1. 2.45 x 1022 formula units2. 1.47 x 1022 formula units3. 2.95 x 1022 formula units4. 1.47 x 1021 formula units5. 6.02 x 1023 formula units

6.10 How many formula units are in 2.45 g of chalk (calcium carbonate)?

Tro IC3

1. 2.45 x 1022 formula units2. 1.47 x 1022 formula units3. 2.95 x 1022 formula units4. 1.47 x 1021 formula units5. 6.02 x 1023 formula units

6.10 How many formula units are in 2.45 g of chalk (calcium carbonate)?

Tro IC3

1. 6.90 mol O2. 3.45 mol O3. 5.75 mol O4. 13.5 mol O5. 17.3 mol O

6.11 How many moles of oxygen are in 3.45 mol of diphosphorus pentoxide?

Tro IC3

1. 6.90 mol O2. 3.45 mol O3. 5.75 mol O4. 13.5 mol O5. 17.3 mol O

6.11 How many moles of oxygen are in 3.45 mol of diphosphorus pentoxide?

Tro IC3

1. 8.64 g2. 20.1 g 3. 17.3 g4. 11.2 g5. 0.541 g

6.12 How many grams of oxygen are in 40.1 g of calcium hydroxide?

Tro IC3

1. 8.64 g2. 20.1 g 3. 17.3 g4. 11.2 g5. 0.541 g

6.12 How many grams of oxygen are in 40.1 g of calcium hydroxide?

Tro IC3

1. 5.67 x 1022 molecules2. 7.19 x 1022 molecules 3. 6.02 x 1023 molecules4. 5.50 x 1023 molecules5. 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.)

Tro IC3

1. 5.67 x 1022 molecules2. 7.19 x 1022 molecules 3. 6.02 x 1023 molecules4. 5.50 x 1023 molecules5. 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.)

Tro IC3

1. 90.7 g 2. 0.177 g3. 5.66 g 4. 181 g5. 0.353 g

6.14 What is the mass of 5.66 mol of dinitrogen tetrahydride?

Tro IC3

1. 90.7 g 2. 0.177 g3. 5.66 g 4. 181 g5. 0.353 g

6.14 What is the mass of 5.66 mol of dinitrogen tetrahydride?

Tro IC3

1. 0.00807 mol2. 0.0161 mol3. 1.29 mol4. 103 mol5. 206 mol

6.15 How many moles of molecules are in 1.29 g of liquid bromine?

Tro IC3

1. 0.00807 mol2. 0.0161 mol3. 1.29 mol4. 103 mol5. 206 mol

6.15 How many moles of molecules are in 1.29 g of liquid bromine?

Tro IC3

1. 0.457 g2. 4.57 g3. 0.129 g4. 0.137 g5. 0.00759 g

6.16 What is the mass of 4.57 x 1021 molecules of ammonia?

Tro IC3

1. 0.457 g2. 4.57 g3. 0.129 g4. 0.137 g5. 0.00759 g

6.16 What is the mass of 4.57 x 1021 molecules of ammonia?

Tro IC3

1. 2 mol2. 0.0878 mol3. 0.00878 mol4. 1.06 x 1023 mol5. 0.176 mol

6.17 How many moles of sodium are in 5.29 x 1022 formula units of sodium sulfate?

Tro IC3

1. 2 mol2. 0.0878 mol3. 0.00878 mol4. 1.06 x 1023 mol5. 0.176 mol

6.17 How many moles of sodium are in 5.29 x 1022 formula units of sodium sulfate?

Tro IC3

1. 1 mol O2. 3 mol O 3. 6 mol O4. 9 mol O5. 12 mol O

6.18 How many moles of oxygen are in one mole of aluminum carbonate?

Tro IC3

1. 1 mol O2. 3 mol O 3. 6 mol O4. 9 mol O5. 12 mol O

6.18 How many moles of oxygen are in one mole of aluminum carbonate?

Tro IC3

1. CH1.5O and C2H3O2

2. C3H5O3 and C6H10O6 3. C4H6O4 and C8H12O8

4. C4H6O4 and C2H3O2

5. 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.

Tro IC3

1. CH1.5O and C2H3O2

2. C3H5O3 and C6H10O6 3. C4H6O4 and C8H12O8

4. C4H6O4 and C2H3O2

5. 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.

Tro IC3

1. 380.3 g/mol2. 182.3 g/mol3. 342.3 g/mol4. 129.0 g/mol5. 145.5 g/mol

6.20 What is the molar mass of sucrose, C12H22O11?

Tro IC3

1. 380.3 g/mol2. 182.3 g/mol3. 342.3 g/mol4. 129.0 g/mol5. 145.5 g/mol

6.20 What is the molar mass of sucrose, C12H22O11?

Tro IC3

1. 8.23 %2. 16.5 %3. 28.9 %4. 5.21 %5. 49.5 %

6.21 What is the mass percent of oxygen in caffeine, C8H10N4O2?

Tro IC3

1. 8.23 %2. 16.5 %3. 28.9 %4. 5.21 %5. 49.5 %

6.21 What is the mass percent of oxygen in caffeine, C8H10N4O2?

Tro IC3

1. C6H8O6

2. C4H4O4 3. C3H4O3 4. CHO5. CH2O

6.22 What is the empirical formula of ascorbic acid, C6H8O6, a compound found in citrus fruits?

Tro IC3

1. C6H8O6

2. C4H4O4 3. C3H4O3 4. CHO5. CH2O

6.22 What is the empirical formula of ascorbic acid, C6H8O6, a compound found in citrus fruits?

Tro IC3

1. H2 2. N2 3. O2 4. F2

5. Cl2

6.23 Identify the diatomic molecule that has a mass of 33.86 g and contains 0.891 moles of molecules.

Tro IC3

1. H2 2. N2 3. O2 4. F2

5. Cl2

6.23 Identify the diatomic molecule that has a mass of 33.86 g and contains 0.891 moles of molecules.

Tro IC3

1. Cr2O7

2. Cr2O4

3. CrO4. CrO1.5

5. Cr2O3

6.24 Calculate the empirical formula of a 5.85 g oxide sample of chromium containing 4.00 g of chromium.

Tro IC3

1. Cr2O7

2. Cr2O4

3. CrO4. CrO1.5

5. Cr2O3

6.24 Calculate the empirical formula of a 5.85 g oxide sample of chromium containing 4.00 g of chromium.

Tro IC3

1. CH 2. CH2

3. C2H4. C2H3

5. CH3

6.25 What is the empirical formula of a compound that contains 14.5% hydrogen and 85.5% carbon by mass?

Tro IC3

1. CH 2. CH2

3. C2H4. C2H3

5. CH3

6.25 What is the empirical formula of a compound that contains 14.5% hydrogen and 85.5% carbon by mass?