Multiple Choice
What is the value of absolute zero?
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1. Intro to General Chemistry
Temperature
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Which of the following shows the correct formula for converting temperature from kelvins to degrees Celsius?
A
C = K - 273.15
B
C = 273.15 - K
C
C = K / 273.15
D
C = K + 273.15
Verified step by step guidance1
Understand the relationship between the Kelvin and Celsius temperature scales. Both scales have the same size degree, but their zero points differ.
Recall that 0 degrees Celsius corresponds to 273.15 kelvins. This means the Kelvin scale is shifted by 273.15 units relative to Celsius.
To convert a temperature from kelvins (K) to degrees Celsius (C), subtract 273.15 from the kelvin temperature because Celsius is lower by that amount.
Write the conversion formula as: \(C = K - 273.15\).
Verify that this formula makes sense by checking a known point, for example, 0 K corresponds to -273.15 °C, which matches the absolute zero concept.
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