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Sagot :
Answer:
120.1 g CH₃COOH
General Formulas and Concepts:
Math
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right
Chemistry
Atomic Structure
- Reading a Periodic Table
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Stoichiometry
- Using Dimensional Analysis
Explanation:
Step 1: Define
1.204 × 10²⁴ molecules CH₃COOH
Step 2: Identify Conversions
Avogadro's Number
[PT] Molar Mass of C - 12.01 g/mol
[PT] Molar Mass of H - 1.01 g/mol
[PT] Molar Mass of O - 16.00 g/mol
Molar Mass of CH₃COOH - 12.01 + 3(1.01) + 12.01 + 16.00 + 16.00 + 1.01 = 60.06 g/mol
Step 3: Convert
- Set up: [tex]\displaystyle 1.204 \cdot 10^{24} \ molecules \ CH_3COOH(\frac{1 \ mol \ CH_3COOH}{6.022 \cdot 10^{23} \ molecules \ CH_3COOH})(\frac{60.06 \ g \ CH_3COOH}{1 \ mol \ CH_3COOH})[/tex]
- Multiply/Divide: [tex]\displaystyle 120.08 \ g \ CH_3COOH[/tex]
Step 4: Check
Follow sig fig rules and round. We are given 4 sig figs.
120.08 g CH₃COOH ≈ 120.1 g CH₃COOH
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