45.98+ 32.07 +64 = 142.05 2. C₂H₁ is the chemical formula for butane, used as lighter fluid. How many molecules of butane are in 3.75 moles?

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### Transcription for Educational Website

---

#### Calculation of Molar Mass:

- **b. CO₂**  
  - Carbon (C): \(12.01 \times 1 = 12.01\)
  - Oxygen (O): \(16.00 \times 2 = 32.00\)  
  - Total: \(12.01 + 32.00 = 44.01\)

- **c. CH₄**
  - Carbon (C): \(12.01 \times 1 = 12.01\)
  - Hydrogen (H): \(1.01 \times 4 = 4.04\)  
  - Total: \(12.01 + 4.04 = 16.05\)

- **d. Na₂SO₄**
  - Sodium (Na): \(22.99 \times 2 = 45.98\)
  - Sulfur (S): \(32.07 \times 1 = 32.07\)
  - Oxygen (O): \(16.00 \times 4 = 64.00\)  
  - Total: \(45.98 + 32.07 + 64.00 = 142.05\)

---

#### Problem Solving:

2. **Question:** C₄H₁₀ is the chemical formula for butane, used as lighter fluid. How many molecules of butane are in 3.75 moles?
   
   Solution:

   \[
   0.622 \, x
   \]
   
   Further calculations are not shown, but this setup indicates a step towards finding the number of molecules using Avogadro’s number.

3. **Question:** Aspartame, C₁₄H₁₈N₂O₅, is used as an artificial sweetener. How many moles are in \(5.21 \times 10^{24}\) formula units?

4. **Question:** What is the mass, in grams, of 1.8 moles of NaCl?

The document seems to provide steps for molar mass calculations and problem setups related to moles and molecules.

---

Note: Yellow highlights indicate calculated totals. Further detailed calculations may be necessary for complete solutions.
Transcribed Image Text:### Transcription for Educational Website --- #### Calculation of Molar Mass: - **b. CO₂** - Carbon (C): \(12.01 \times 1 = 12.01\) - Oxygen (O): \(16.00 \times 2 = 32.00\) - Total: \(12.01 + 32.00 = 44.01\) - **c. CH₄** - Carbon (C): \(12.01 \times 1 = 12.01\) - Hydrogen (H): \(1.01 \times 4 = 4.04\) - Total: \(12.01 + 4.04 = 16.05\) - **d. Na₂SO₄** - Sodium (Na): \(22.99 \times 2 = 45.98\) - Sulfur (S): \(32.07 \times 1 = 32.07\) - Oxygen (O): \(16.00 \times 4 = 64.00\) - Total: \(45.98 + 32.07 + 64.00 = 142.05\) --- #### Problem Solving: 2. **Question:** C₄H₁₀ is the chemical formula for butane, used as lighter fluid. How many molecules of butane are in 3.75 moles? Solution: \[ 0.622 \, x \] Further calculations are not shown, but this setup indicates a step towards finding the number of molecules using Avogadro’s number. 3. **Question:** Aspartame, C₁₄H₁₈N₂O₅, is used as an artificial sweetener. How many moles are in \(5.21 \times 10^{24}\) formula units? 4. **Question:** What is the mass, in grams, of 1.8 moles of NaCl? The document seems to provide steps for molar mass calculations and problem setups related to moles and molecules. --- Note: Yellow highlights indicate calculated totals. Further detailed calculations may be necessary for complete solutions.
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