Worksheets That Use These Designs - Engaging tools for students to learn molar mass calculations.
Two educational worksheets on calculating molar mass, displayed against a white brick wall background, with text highlighting their appeal to algebra-minded and visual/English-loving students.
PNG
960×540
236.2 KB
Free · Personal Use
Quality Assured by Worksheets Library Team
Reviewed for educational accuracy and age-appropriateness
ID: #288700
⭐
Show Answer Key & Explanations
Step-by-step solution for: How to Teach Molar Mass — CoScine Creative
▼
Show Answer Key & Explanations
Step-by-step solution for: How to Teach Molar Mass — CoScine Creative
1. Calculate the molar mass of LiCl:
- Li: 6.94 g/mol
- Cl: 35.45 g/mol
- Molar mass of LiCl = 6.94 + 35.45 = 42.39 g/mol
2. Calculate the molar mass of Ba(OH)₂:
- Ba: 137.33 g/mol
- O: 16.00 g/mol (2 atoms)
- H: 1.01 g/mol (2 atoms)
- Molar mass of Ba(OH)₂ = 137.33 + (2 × 16.00) + (2 × 1.01) = 137.33 + 32.00 + 2.02 = 171.35 g/mol
3. Calculate the molar mass of H₂CO₃:
- H: 1.01 g/mol (2 atoms)
- C: 12.01 g/mol
- O: 16.00 g/mol (3 atoms)
- Molar mass of H₂CO₃ = (2 × 1.01) + 12.01 + (3 × 16.00) = 2.02 + 12.01 + 48.00 = 62.03 g/mol
4. Calculate the molar mass of N₂O₅:
- N: 14.01 g/mol (2 atoms)
- O: 16.00 g/mol (5 atoms)
- Molar mass of N₂O₅ = (2 × 14.01) + (5 × 16.00) = 28.02 + 80.00 = 108.02 g/mol
5. Calculate the molar mass of C₆H₁₂O₆:
- C: 12.01 g/mol (6 atoms)
- H: 1.01 g/mol (12 atoms)
- O: 16.00 g/mol (6 atoms)
- Molar mass of C₆H₁₂O₆ = (6 × 12.01) + (12 × 1.01) + (6 × 16.00) = 72.06 + 12.12 + 96.00 = 180.18 g/mol
6. Calculate the molar mass of Na₂SO₄:
- Na: 22.99 g/mol (2 atoms)
- S: 32.07 g/mol
- O: 16.00 g/mol (4 atoms)
- Molar mass of Na₂SO₄ = (2 × 22.99) + 32.07 + (4 × 16.00) = 45.98 + 32.07 + 64.00 = 142.05 g/mol
7. Calculate the molar mass of Ba(NO₃)₂:
- Ba: 137.33 g/mol
- N: 14.01 g/mol (2 atoms)
- O: 16.00 g/mol (6 atoms)
- Molar mass of Ba(NO₃)₂ = 137.33 + (2 × 14.01) + (6 × 16.00) = 137.33 + 28.02 + 96.00 = 261.35 g/mol
8. Calculate the molar mass of LiBr:
- Li: 6.94 g/mol
- Br: 79.90 g/mol
- Molar mass of LiBr = 6.94 + 79.90 = 86.84 g/mol
9. Calculate the molar mass of Fe(OH)₃:
- Fe: 55.85 g/mol
- O: 16.00 g/mol (3 atoms)
- H: 1.01 g/mol (3 atoms)
- Molar mass of Fe(OH)₃ = 55.85 + (3 × 16.00) + (3 × 1.01) = 55.85 + 48.00 + 3.03 = 106.88 g/mol
10. Calculate the molar mass of H₂SO₄:
- H: 1.01 g/mol (2 atoms)
- S: 32.07 g/mol
- O: 16.00 g/mol (4 atoms)
- Molar mass of H₂SO₄ = (2 × 1.01) + 32.07 + (4 × 16.00) = 2.02 + 32.07 + 64.00 = 98.09 g/mol
11. Calculate the molar mass of CaCO₃:
- Ca: 40.08 g/mol
- C: 12.01 g/mol
- O: 16.00 g/mol (3 atoms)
- Molar mass of CaCO₃ = 40.08 + 12.01 + (3 × 16.00) = 40.08 + 12.01 + 48.00 = 100.09 g/mol
12. Calculate the molar mass of NaClO₃:
- Na: 22.99 g/mol
- Cl: 35.45 g/mol
- O: 16.00 g/mol (3 atoms)
- Molar mass of NaClO₃ = 22.99 + 35.45 + (3 × 16.00) = 22.99 + 35.45 + 48.00 = 106.44 g/mol
13. Calculate the molar mass of Ca(OH)₂:
- Ca: 40.08 g/mol
- O: 16.00 g/mol (2 atoms)
- H: 1.01 g/mol (2 atoms)
- Molar mass of Ca(OH)₂ = 40.08 + (2 × 16.00) + (2 × 1.01) = 40.08 + 32.00 + 2.02 = 74.10 g/mol
14. Calculate the molar mass of K₂CO₃:
- K: 39.10 g/mol (2 atoms)
- C: 12.01 g/mol
- O: 16.00 g/mol (3 atoms)
- Molar mass of K₂CO₃ = (2 × 39.10) + 12.01 + (3 × 16.00) = 78.20 + 12.01 + 48.00 = 138.21 g/mol
15. Calculate the molar mass of Mg(OH)₂:
- Mg: 24.31 g/mol
- O: 16.00 g/mol (2 atoms)
- H: 1.01 g/mol (2 atoms)
- Molar mass of Mg(OH)₂ = 24.31 + (2 × 16.00) + (2 × 1.01) = 24.31 + 32.00 + 2.02 = 58.33 g/mol
16. Calculate the molar mass of Al₂(SO₄)₃:
- Al: 26.98 g/mol (2 atoms)
- S: 32.07 g/mol (3 atoms)
- O: 16.00 g/mol (12 atoms)
- Molar mass of Al₂(SO₄)₃ = (2 × 26.98) + (3 × 32.07) + (12 × 16.00) = 53.96 + 96.21 + 192.00 = 342.17 g/mol
17. Calculate the molar mass of K₂Cr₂O₇:
- K: 39.10 g/mol (2 atoms)
- Cr: 52.00 g/mol (2 atoms)
- O: 16.00 g/mol (7 atoms)
- Molar mass of K₂Cr₂O₇ = (2 × 39.10) + (2 × 52.00) + (7 × 16.00) = 78.20 + 104.00 + 112.00 = 294.20 g/mol
18. Calculate the molar mass of Fe₂(SO₄)₃:
- Fe: 55.85 g/mol (2 atoms)
- S: 32.07 g/mol (3 atoms)
- O: 16.00 g/mol (12 atoms)
- Molar mass of Fe₂(SO₄)₃ = (2 × 55.85) + (3 × 32.07) + (12 × 16.00) = 111.70 + 96.21 + 192.00 = 399.91 g/mol
19. Calculate the molar mass of Ca₃(PO₄)₂:
- Ca: 40.08 g/mol (3 atoms)
- P: 30.97 g/mol (2 atoms)
- O: 16.00 g/mol (8 atoms)
- Molar mass of Ca₃(PO₄)₂ = (3 × 40.08) + (2 × 30.97) + (8 × 16.00) = 120.24 + 61.94 + 128.00 = 310.18 g/mol
20. Calculate the molar mass of Al₂O₃:
- Al: 26.98 g/mol (2 atoms)
- O: 16.00 g/mol (3 atoms)
- Molar mass of Al₂O₃ = (2 × 26.98) + (3 × 16.00) = 53.96 + 48.00 = 101.96 g/mol
21. Calculate the molar mass of Ca(OH)₂:
- Ca: 40.08 g/mol
- O: 16.00 g/mol (2 atoms)
- H: 1.01 g/mol (2 atoms)
- Molar mass of Ca(OH)₂ = 40.08 + (2 × 16.00) + (2 × 1.01) = 40.08 + 32.00 + 2.02 = 74.10 g/mol
22. Calculate the molar mass of K₂Cr₂O₇:
- K: 39.10 g/mol (2 atoms)
- Cr: 52.00 g/mol (2 atoms)
- O: 16.00 g/mol (7 atoms)
- Molar mass of K₂Cr₂O₇ = (2 × 39.10) + (2 × 52.00) + (7 × 16.00) = 78.20 + 104.00 + 112.00 = 294.20 g/mol
23. Calculate the molar mass of Al₂(SO₄)₃:
- Al: 26.98 g/mol (2 atoms)
- S: 32.07 g/mol (3 atoms)
- O: 16.00 g/mol (12 atoms)
- Molar mass of Al₂(SO₄)₃ = (2 × 26.98) + (3 × 32.07) + (12 × 16.00) = 53.96 + 96.21 + 192.00 = 342.17 g/mol
24. Calculate the molar mass of Fe₂(SO₄)₃:
- Fe: 55.85 g/mol (2 atoms)
- S: 32.07 g/mol (3 atoms)
- O: 16.00 g/mol (12 atoms)
- Molar mass of Fe₂(SO₄)₃ = (2 × 55.85) + (3 × 32.07) + (12 × 16.00) = 111.70 + 96.21 + 192.00 = 399.91 g/mol
25. Calculate the molar mass of Ca₃(PO₄)₂:
- Ca: 40.08 g/mol (3 atoms)
- P: 30.97 g/mol (2 atoms)
- O: 16.00 g/mol (8 atoms)
- Molar mass of Ca₃(PO₄)₂ = (3 × 40.08) + (2 × 30.97) + (8 × 16.00) = 120.24 + 61.94 + 128.00 = 310.18 g/mol
- Li: 6.94 g/mol
- Cl: 35.45 g/mol
- Molar mass of LiCl = 6.94 + 35.45 = 42.39 g/mol
2. Calculate the molar mass of Ba(OH)₂:
- Ba: 137.33 g/mol
- O: 16.00 g/mol (2 atoms)
- H: 1.01 g/mol (2 atoms)
- Molar mass of Ba(OH)₂ = 137.33 + (2 × 16.00) + (2 × 1.01) = 137.33 + 32.00 + 2.02 = 171.35 g/mol
3. Calculate the molar mass of H₂CO₃:
- H: 1.01 g/mol (2 atoms)
- C: 12.01 g/mol
- O: 16.00 g/mol (3 atoms)
- Molar mass of H₂CO₃ = (2 × 1.01) + 12.01 + (3 × 16.00) = 2.02 + 12.01 + 48.00 = 62.03 g/mol
4. Calculate the molar mass of N₂O₅:
- N: 14.01 g/mol (2 atoms)
- O: 16.00 g/mol (5 atoms)
- Molar mass of N₂O₅ = (2 × 14.01) + (5 × 16.00) = 28.02 + 80.00 = 108.02 g/mol
5. Calculate the molar mass of C₆H₁₂O₆:
- C: 12.01 g/mol (6 atoms)
- H: 1.01 g/mol (12 atoms)
- O: 16.00 g/mol (6 atoms)
- Molar mass of C₆H₁₂O₆ = (6 × 12.01) + (12 × 1.01) + (6 × 16.00) = 72.06 + 12.12 + 96.00 = 180.18 g/mol
6. Calculate the molar mass of Na₂SO₄:
- Na: 22.99 g/mol (2 atoms)
- S: 32.07 g/mol
- O: 16.00 g/mol (4 atoms)
- Molar mass of Na₂SO₄ = (2 × 22.99) + 32.07 + (4 × 16.00) = 45.98 + 32.07 + 64.00 = 142.05 g/mol
7. Calculate the molar mass of Ba(NO₃)₂:
- Ba: 137.33 g/mol
- N: 14.01 g/mol (2 atoms)
- O: 16.00 g/mol (6 atoms)
- Molar mass of Ba(NO₃)₂ = 137.33 + (2 × 14.01) + (6 × 16.00) = 137.33 + 28.02 + 96.00 = 261.35 g/mol
8. Calculate the molar mass of LiBr:
- Li: 6.94 g/mol
- Br: 79.90 g/mol
- Molar mass of LiBr = 6.94 + 79.90 = 86.84 g/mol
9. Calculate the molar mass of Fe(OH)₃:
- Fe: 55.85 g/mol
- O: 16.00 g/mol (3 atoms)
- H: 1.01 g/mol (3 atoms)
- Molar mass of Fe(OH)₃ = 55.85 + (3 × 16.00) + (3 × 1.01) = 55.85 + 48.00 + 3.03 = 106.88 g/mol
10. Calculate the molar mass of H₂SO₄:
- H: 1.01 g/mol (2 atoms)
- S: 32.07 g/mol
- O: 16.00 g/mol (4 atoms)
- Molar mass of H₂SO₄ = (2 × 1.01) + 32.07 + (4 × 16.00) = 2.02 + 32.07 + 64.00 = 98.09 g/mol
11. Calculate the molar mass of CaCO₃:
- Ca: 40.08 g/mol
- C: 12.01 g/mol
- O: 16.00 g/mol (3 atoms)
- Molar mass of CaCO₃ = 40.08 + 12.01 + (3 × 16.00) = 40.08 + 12.01 + 48.00 = 100.09 g/mol
12. Calculate the molar mass of NaClO₃:
- Na: 22.99 g/mol
- Cl: 35.45 g/mol
- O: 16.00 g/mol (3 atoms)
- Molar mass of NaClO₃ = 22.99 + 35.45 + (3 × 16.00) = 22.99 + 35.45 + 48.00 = 106.44 g/mol
13. Calculate the molar mass of Ca(OH)₂:
- Ca: 40.08 g/mol
- O: 16.00 g/mol (2 atoms)
- H: 1.01 g/mol (2 atoms)
- Molar mass of Ca(OH)₂ = 40.08 + (2 × 16.00) + (2 × 1.01) = 40.08 + 32.00 + 2.02 = 74.10 g/mol
14. Calculate the molar mass of K₂CO₃:
- K: 39.10 g/mol (2 atoms)
- C: 12.01 g/mol
- O: 16.00 g/mol (3 atoms)
- Molar mass of K₂CO₃ = (2 × 39.10) + 12.01 + (3 × 16.00) = 78.20 + 12.01 + 48.00 = 138.21 g/mol
15. Calculate the molar mass of Mg(OH)₂:
- Mg: 24.31 g/mol
- O: 16.00 g/mol (2 atoms)
- H: 1.01 g/mol (2 atoms)
- Molar mass of Mg(OH)₂ = 24.31 + (2 × 16.00) + (2 × 1.01) = 24.31 + 32.00 + 2.02 = 58.33 g/mol
16. Calculate the molar mass of Al₂(SO₄)₃:
- Al: 26.98 g/mol (2 atoms)
- S: 32.07 g/mol (3 atoms)
- O: 16.00 g/mol (12 atoms)
- Molar mass of Al₂(SO₄)₃ = (2 × 26.98) + (3 × 32.07) + (12 × 16.00) = 53.96 + 96.21 + 192.00 = 342.17 g/mol
17. Calculate the molar mass of K₂Cr₂O₇:
- K: 39.10 g/mol (2 atoms)
- Cr: 52.00 g/mol (2 atoms)
- O: 16.00 g/mol (7 atoms)
- Molar mass of K₂Cr₂O₇ = (2 × 39.10) + (2 × 52.00) + (7 × 16.00) = 78.20 + 104.00 + 112.00 = 294.20 g/mol
18. Calculate the molar mass of Fe₂(SO₄)₃:
- Fe: 55.85 g/mol (2 atoms)
- S: 32.07 g/mol (3 atoms)
- O: 16.00 g/mol (12 atoms)
- Molar mass of Fe₂(SO₄)₃ = (2 × 55.85) + (3 × 32.07) + (12 × 16.00) = 111.70 + 96.21 + 192.00 = 399.91 g/mol
19. Calculate the molar mass of Ca₃(PO₄)₂:
- Ca: 40.08 g/mol (3 atoms)
- P: 30.97 g/mol (2 atoms)
- O: 16.00 g/mol (8 atoms)
- Molar mass of Ca₃(PO₄)₂ = (3 × 40.08) + (2 × 30.97) + (8 × 16.00) = 120.24 + 61.94 + 128.00 = 310.18 g/mol
20. Calculate the molar mass of Al₂O₃:
- Al: 26.98 g/mol (2 atoms)
- O: 16.00 g/mol (3 atoms)
- Molar mass of Al₂O₃ = (2 × 26.98) + (3 × 16.00) = 53.96 + 48.00 = 101.96 g/mol
21. Calculate the molar mass of Ca(OH)₂:
- Ca: 40.08 g/mol
- O: 16.00 g/mol (2 atoms)
- H: 1.01 g/mol (2 atoms)
- Molar mass of Ca(OH)₂ = 40.08 + (2 × 16.00) + (2 × 1.01) = 40.08 + 32.00 + 2.02 = 74.10 g/mol
22. Calculate the molar mass of K₂Cr₂O₇:
- K: 39.10 g/mol (2 atoms)
- Cr: 52.00 g/mol (2 atoms)
- O: 16.00 g/mol (7 atoms)
- Molar mass of K₂Cr₂O₇ = (2 × 39.10) + (2 × 52.00) + (7 × 16.00) = 78.20 + 104.00 + 112.00 = 294.20 g/mol
23. Calculate the molar mass of Al₂(SO₄)₃:
- Al: 26.98 g/mol (2 atoms)
- S: 32.07 g/mol (3 atoms)
- O: 16.00 g/mol (12 atoms)
- Molar mass of Al₂(SO₄)₃ = (2 × 26.98) + (3 × 32.07) + (12 × 16.00) = 53.96 + 96.21 + 192.00 = 342.17 g/mol
24. Calculate the molar mass of Fe₂(SO₄)₃:
- Fe: 55.85 g/mol (2 atoms)
- S: 32.07 g/mol (3 atoms)
- O: 16.00 g/mol (12 atoms)
- Molar mass of Fe₂(SO₄)₃ = (2 × 55.85) + (3 × 32.07) + (12 × 16.00) = 111.70 + 96.21 + 192.00 = 399.91 g/mol
25. Calculate the molar mass of Ca₃(PO₄)₂:
- Ca: 40.08 g/mol (3 atoms)
- P: 30.97 g/mol (2 atoms)
- O: 16.00 g/mol (8 atoms)
- Molar mass of Ca₃(PO₄)₂ = (3 × 40.08) + (2 × 30.97) + (8 × 16.00) = 120.24 + 61.94 + 128.00 = 310.18 g/mol
Parent Tip: Review the logic above to help your child master the concept of calculating molar mass worksheet.
