(LATE) Charles's Starter 2.20
🧪 INSTRUCTIONS:
1) Complete the Charles's Law Starter 2.20 (below)
2) Screenshot your name + score to the LATE DROPBOX assignment when finish.
3) See Code: CharlesNotes for extra help
1) Complete the Charles's Law Starter 2.20 (below)
2) Screenshot your name + score to the LATE DROPBOX assignment when finish.
3) See Code: CharlesNotes for extra help
Charles's Starter 2.0
Charlesâs Law: V1/T1 = V2/T2 (Pressure stays constant)
1) Formula (The Prediction)
Use Charlesâs Law when pressure stays constant:
V1 / T1 = V2 / T2
- To solve for a Theoretical V2: V2 = V1 Ă (T2 / T1)
2) Temperature Rule (Always Kelvin)
Even if the lab gives temperatures in °C, you must convert:
K = °C + 273
- Convert T1 and T2 to Kelvin before plugging into the formula.
3) Theoretical vs Experimental + Percent Error (Teachable Example)
- Theoretical V2 = what you predict using Charlesâs Law.
- Experimental V2 = what you measured in the lab (from the chart).
- Difference = |V2(theory) â V2(exp)|
- Percent Error = (|exp â theory| á theory) Ă 100
Example Data
V1 = 355 mL
T1 = 25°C
T2 = 75°C
V2(exp) = 415 mL
- Step 1 Convert to Kelvin: T1 = 25+273 = 298 K, T2 = 75+273 = 348 K
- Step 2 Theoretical V2: V2 = 355 Ă (348/298) â 415 mL
- Step 3 Difference: |415 â 415| = 0 mL
- Step 4 Percent Error: (0 á 415) à 100 = 0%
2 questions total. Each question has 3 answer boxes: (1) Theoretical V2 (mL), (2) Difference (mL), and (3) Percent Error (%). You earn credit for each box that is correct. Score appears only at the end.