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Topic 6: Moles and stoichiometry - Mathematics of formulas and equations
3. Formula mass: Determining mass of 1 mole of a substance
1. What is the gram atomic mass of Ca?
1) 20 2) 40 3) 18 4) 2
2. What is the mass of one mole of gold?
1) 11 g 2) 79 g 3) 197g 4) 80 g
3. What is the mass in grams of 1 mole of Co?
1) 27 2) 28 3) 12 4) 59
4. What is the mass of 1 mole of H3PO4?
1) 82 2) 98 3) 24 4) 30
5. What is the formula mass of Ca(OH)2?
Teacher Preview Copy
Teacher Preview Copy
1) 29 g 2) 74 g 3) 34 g 4) 57 g
6. The gram formula mass of (NH4)3PO4 is
1) 149 g 2) 120 g 3) 404 g 4) 300 g
7. The formula mass of C3H5(OH)3 is
1) 48 g/mole 2) 58 g /mole 3) 74 g/mole 4) 92 g/mole
8. What is the gram formula mass of CuSO4.3H2O ?
1) 214 g 2) 250 g 3) 294 g 4) 178 g
9. What is the mass of 1 mole of (NH4)2CO3. 4H2O?
1) 154 g 2) 216 g 3) 168 g 4) 26 g
10. What is the molar mass of Ba(OH)2. 8H2O ?
1) 452 g/mole 2) 187 g/mol 3) 242 g 4) 315 g
4. Mole calculation: Calculation of moles from mass
1. What is the total number of moles represented by 46 grams of Na? 4) 1 mole
1) 23 moles
3) 0.5 mole
2) 2.0 moles
2. The total number of moles in 28 grams of Fe is
1) 0.5 2) 1 2) 2 4) 2.5
3. The number of moles of the element lead that will have a mass of 311 grams is equal to
1) 2 mole 2) 1.5 mole 3) 0.67 mole 4) 1.0 mole
4. A student measured 56 grams of Fe2O3 for a laboratory experiment. How many moles of Fe2O3 do
this mass represents? 2) 0.50 3) 0.35 4) 2.00
1) 1.00
5. The number of moles of H2SO4 that weighs 245 grams is equal to
1) 0.4 mole 2) 1 moles 3) 2.5 moles 4) 3 moles
6. How many moles of moles is represented by 184 grams of C3H5(OH)3?
1) 1 2) 0.5 3) 1.5 4) 2
7. How many moles is represented by 286 grams of Na2CO3.10H2O?
1) 0.2 mole 2) 0.5 mole 3) 1 mole 4) 2 moles
8. Which set up is correct for calculating the number of moles in Al(ClO3)3.6H2O in 576 grams of this
substance? 2) 6 x 576 3) 384 4) 576
1) 576 x 384
576 384
224 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
Topic 6: Moles and stoichiometry - Mathematics of formulas and equations
3. Formula mass: Determining mass of 1 mole of a substance
1. What is the gram atomic mass of Ca?
1) 20 2) 40 3) 18 4) 2
2. What is the mass of one mole of gold?
1) 11 g 2) 79 g 3) 197g 4) 80 g
3. What is the mass in grams of 1 mole of Co?
1) 27 2) 28 3) 12 4) 59
4. What is the mass of 1 mole of H3PO4?
1) 82 2) 98 3) 24 4) 30
5. What is the formula mass of Ca(OH)2?
Teacher Preview Copy
Teacher Preview Copy
1) 29 g 2) 74 g 3) 34 g 4) 57 g
6. The gram formula mass of (NH4)3PO4 is
1) 149 g 2) 120 g 3) 404 g 4) 300 g
7. The formula mass of C3H5(OH)3 is
1) 48 g/mole 2) 58 g /mole 3) 74 g/mole 4) 92 g/mole
8. What is the gram formula mass of CuSO4.3H2O ?
1) 214 g 2) 250 g 3) 294 g 4) 178 g
9. What is the mass of 1 mole of (NH4)2CO3. 4H2O?
1) 154 g 2) 216 g 3) 168 g 4) 26 g
10. What is the molar mass of Ba(OH)2. 8H2O ?
1) 452 g/mole 2) 187 g/mol 3) 242 g 4) 315 g
4. Mole calculation: Calculation of moles from mass
1. What is the total number of moles represented by 46 grams of Na? 4) 1 mole
1) 23 moles
3) 0.5 mole
2) 2.0 moles
2. The total number of moles in 28 grams of Fe is
1) 0.5 2) 1 2) 2 4) 2.5
3. The number of moles of the element lead that will have a mass of 311 grams is equal to
1) 2 mole 2) 1.5 mole 3) 0.67 mole 4) 1.0 mole
4. A student measured 56 grams of Fe2O3 for a laboratory experiment. How many moles of Fe2O3 do
this mass represents? 2) 0.50 3) 0.35 4) 2.00
1) 1.00
5. The number of moles of H2SO4 that weighs 245 grams is equal to
1) 0.4 mole 2) 1 moles 3) 2.5 moles 4) 3 moles
6. How many moles of moles is represented by 184 grams of C3H5(OH)3?
1) 1 2) 0.5 3) 1.5 4) 2
7. How many moles is represented by 286 grams of Na2CO3.10H2O?
1) 0.2 mole 2) 0.5 mole 3) 1 mole 4) 2 moles
8. Which set up is correct for calculating the number of moles in Al(ClO3)3.6H2O in 576 grams of this
substance? 2) 6 x 576 3) 384 4) 576
1) 576 x 384
576 384
224 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
