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Sagot :
Answer:
270. mL
General Formulas and Concepts:
Acid-Base Titrations
Dilution: M₁V₁ = M₂V₂
- M₁ is stock molarity
- V₁ is stock volume
- M₂ is new molarity
- V₂ is new volume
Explanation:
Step 1: Define
Identify
[Given] V₂ = 629.1 mL
[Given] M₂ = 11.2 M
[Given] M₁ = 26.1 M
[Solve] V₁
Step 2: Find Stock Volume
- Substitute in variables [Dilution]: (26.1 M)V₁ = (11.2 M)(629.1 mL)
- Multiply: (26.1 M)V₁ = 7045.92 M · mL
- Isolate V₁ [Cancel out units]: V₁ = 269.959 mL
Step 3: Check
Follow sig fig rules and round. We are given 3 sig figs as our lowest.
269.959 mL ≈ 270. mL
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