Advanced Placement (AP) Biology Practice Exam

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If the temperature was 39 degrees C, what is the equivalent temperature in Kelvin?

  1. 298K

  2. 310K

  3. 312K

  4. 315K

The correct answer is: 312K

To convert Celsius to Kelvin, you use the formula: \[ K = C + 273.15 \] Where C is the temperature in degrees Celsius and K is the temperature in Kelvin. In this case, the temperature given is 39 degrees Celsius. Applying the formula: \[ K = 39 + 273.15 = 312.15 \] When rounding to the nearest whole number, this results in 312K. Therefore, the most accurate equivalent temperature in Kelvin for 39 degrees Celsius is indeed 312K. This conversion is critical in scientific contexts since many equations and relationships depend on the temperature being in Kelvin, particularly in the fields of thermodynamics and physical chemistry.

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