Exam-style question
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Convert a temperature of -40°C to Kelvin.
- A.233 K
- B.273 K
- C.40 K
- D.0 K
Model answer
What a good answer should say
- 233 K
Explanation
Why this works
Using the formula K = °C + 273.15, substituting -40 for °C gives K = -40 + 273.15 = 233.15 K, which rounds to 233 K.
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