Question
Find the molar masses of the following compounds:
1)
LiI
2)
3)
4)
5)
6)
7)
8)
9)
PbCO4
Mg(OH)2
K3PO4
(NH4)3PO4
C6H12O6
Fe2(SO4)3
Na3P
AgF
10) NH4C2H3O2
1)
LiI
2)
3)
4)
5)
6)
7)
8)
9)
PbCO4
Mg(OH)2
K3PO4
(NH4)3PO4
C6H12O6
Fe2(SO4)3
Na3P
AgF
10) NH4C2H3O2
Answers
GPT-4o mini
To find the molar masses of the given compounds, we will sum the atomic weights of all the atoms in each compound based on the periodic table (rounded to two decimal places for standard atomic weights). Here are the molar masses of the given compounds:
1) **LiI** (Lithium Iodide)
- Li: 6.94 g/mol
- I: 126.90 g/mol
- Molar Mass = 6.94 + 126.90 = **133.84 g/mol**
2) **PbCO₄** (Lead(IV) Carbonate)
- Pb: 207.2 g/mol
- C: 12.01 g/mol
- O: 16.00 g/mol (4 oxygen atoms)
- Molar Mass = 207.2 + 12.01 + (4 × 16.00) = 207.2 + 12.01 + 64.00 = **283.21 g/mol**
3) **Mg(OH)₂** (Magnesium Hydroxide)
- Mg: 24.31 g/mol
- O: 16.00 g/mol (2 oxygen atoms)
- H: 1.008 g/mol (2 hydrogen atoms)
- Molar Mass = 24.31 + (2 × 16.00) + (2 × 1.008) = 24.31 + 32.00 + 2.016 = **58.33 g/mol**
4) **K₃PO₄** (Potassium Phosphate)
- K: 39.10 g/mol (3 potassium atoms)
- P: 30.97 g/mol
- O: 16.00 g/mol (4 oxygen atoms)
- Molar Mass = (3 × 39.10) + 30.97 + (4 × 16.00) = 117.30 + 30.97 + 64.00 = **212.27 g/mol**
5) **(NH₄)₃PO₄** (Ammonium Phosphate)
- N: 14.01 g/mol (3 nitrogen atoms)
- H: 1.008 g/mol (12 hydrogen atoms)
- P: 30.97 g/mol
- O: 16.00 g/mol (4 oxygen atoms)
- Molar Mass = (3 × 14.01) + (12 × 1.008) + 30.97 + (4 × 16.00) = 42.03 + 12.096 + 30.97 + 64.00 = **149.09 g/mol**
6) **C₆H₁₂O₆** (Glucose)
- C: 12.01 g/mol (6 carbon atoms)
- H: 1.008 g/mol (12 hydrogen atoms)
- O: 16.00 g/mol (6 oxygen atoms)
- Molar Mass = (6 × 12.01) + (12 × 1.008) + (6 × 16.00) = 72.06 + 12.096 + 96.00 = **180.16 g/mol**
7) **Fe₂(SO₄)₃** (Iron(III) Sulfate)
- Fe: 55.85 g/mol (2 iron atoms)
- S: 32.07 g/mol (3 sulfur atoms)
- O: 16.00 g/mol (12 oxygen atoms)
- Molar Mass = (2 × 55.85) + (3 × 32.07) + (12 × 16.00) = 111.70 + 96.21 + 192.00 = **399.91 g/mol**
8) **Na₃P** (Sodium Phosphide)
- Na: 22.99 g/mol (3 sodium atoms)
- P: 30.97 g/mol
- Molar Mass = (3 × 22.99) + 30.97 = 68.97 + 30.97 = **99.94 g/mol**
9) **AgF** (Silver Fluoride)
- Ag: 107.87 g/mol
- F: 19.00 g/mol
- Molar Mass = 107.87 + 19.00 = **126.87 g/mol**
10) **NH₄C₂H₃O₂** (Ammonium Acetate)
- N: 14.01 g/mol (1 nitrogen atom)
- H: 1.008 g/mol (7 hydrogen atoms)
- C: 12.01 g/mol (2 carbon atoms)
- O: 16.00 g/mol (2 oxygen atoms)
- Molar Mass = 14.01 + (7 × 1.008) + (2 × 12.01) + (2 × 16.00) = 14.01 + 7.056 + 24.02 + 32.00 = **77.09 g/mol**
Here are the molar masses summarized:
1) LiI - 133.84 g/mol
2) PbCO₄ - 283.21 g/mol
3) Mg(OH)₂ - 58.33 g/mol
4) K₃PO₄ - 212.27 g/mol
5) (NH₄)₃PO₄ - 149.09 g/mol
6) C₆H₁₂O₆ - 180.16 g/mol
7) Fe₂(SO₄)₃ - 399.91 g/mol
8) Na₃P - 99.94 g/mol
9) AgF - 126.87 g/mol
10) NH₄C₂H₃O₂ - 77.09 g/mol
1) **LiI** (Lithium Iodide)
- Li: 6.94 g/mol
- I: 126.90 g/mol
- Molar Mass = 6.94 + 126.90 = **133.84 g/mol**
2) **PbCO₄** (Lead(IV) Carbonate)
- Pb: 207.2 g/mol
- C: 12.01 g/mol
- O: 16.00 g/mol (4 oxygen atoms)
- Molar Mass = 207.2 + 12.01 + (4 × 16.00) = 207.2 + 12.01 + 64.00 = **283.21 g/mol**
3) **Mg(OH)₂** (Magnesium Hydroxide)
- Mg: 24.31 g/mol
- O: 16.00 g/mol (2 oxygen atoms)
- H: 1.008 g/mol (2 hydrogen atoms)
- Molar Mass = 24.31 + (2 × 16.00) + (2 × 1.008) = 24.31 + 32.00 + 2.016 = **58.33 g/mol**
4) **K₃PO₄** (Potassium Phosphate)
- K: 39.10 g/mol (3 potassium atoms)
- P: 30.97 g/mol
- O: 16.00 g/mol (4 oxygen atoms)
- Molar Mass = (3 × 39.10) + 30.97 + (4 × 16.00) = 117.30 + 30.97 + 64.00 = **212.27 g/mol**
5) **(NH₄)₃PO₄** (Ammonium Phosphate)
- N: 14.01 g/mol (3 nitrogen atoms)
- H: 1.008 g/mol (12 hydrogen atoms)
- P: 30.97 g/mol
- O: 16.00 g/mol (4 oxygen atoms)
- Molar Mass = (3 × 14.01) + (12 × 1.008) + 30.97 + (4 × 16.00) = 42.03 + 12.096 + 30.97 + 64.00 = **149.09 g/mol**
6) **C₆H₁₂O₆** (Glucose)
- C: 12.01 g/mol (6 carbon atoms)
- H: 1.008 g/mol (12 hydrogen atoms)
- O: 16.00 g/mol (6 oxygen atoms)
- Molar Mass = (6 × 12.01) + (12 × 1.008) + (6 × 16.00) = 72.06 + 12.096 + 96.00 = **180.16 g/mol**
7) **Fe₂(SO₄)₃** (Iron(III) Sulfate)
- Fe: 55.85 g/mol (2 iron atoms)
- S: 32.07 g/mol (3 sulfur atoms)
- O: 16.00 g/mol (12 oxygen atoms)
- Molar Mass = (2 × 55.85) + (3 × 32.07) + (12 × 16.00) = 111.70 + 96.21 + 192.00 = **399.91 g/mol**
8) **Na₃P** (Sodium Phosphide)
- Na: 22.99 g/mol (3 sodium atoms)
- P: 30.97 g/mol
- Molar Mass = (3 × 22.99) + 30.97 = 68.97 + 30.97 = **99.94 g/mol**
9) **AgF** (Silver Fluoride)
- Ag: 107.87 g/mol
- F: 19.00 g/mol
- Molar Mass = 107.87 + 19.00 = **126.87 g/mol**
10) **NH₄C₂H₃O₂** (Ammonium Acetate)
- N: 14.01 g/mol (1 nitrogen atom)
- H: 1.008 g/mol (7 hydrogen atoms)
- C: 12.01 g/mol (2 carbon atoms)
- O: 16.00 g/mol (2 oxygen atoms)
- Molar Mass = 14.01 + (7 × 1.008) + (2 × 12.01) + (2 × 16.00) = 14.01 + 7.056 + 24.02 + 32.00 = **77.09 g/mol**
Here are the molar masses summarized:
1) LiI - 133.84 g/mol
2) PbCO₄ - 283.21 g/mol
3) Mg(OH)₂ - 58.33 g/mol
4) K₃PO₄ - 212.27 g/mol
5) (NH₄)₃PO₄ - 149.09 g/mol
6) C₆H₁₂O₆ - 180.16 g/mol
7) Fe₂(SO₄)₃ - 399.91 g/mol
8) Na₃P - 99.94 g/mol
9) AgF - 126.87 g/mol
10) NH₄C₂H₃O₂ - 77.09 g/mol