Multiple Choice
Which of the following is a measure of the average kinetic energy of the molecules in a material?
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1. Intro to General Chemistry
Temperature
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Which formula is used to convert a temperature from degrees Celsius to Kelvin?
A
K = °C - 273.15
B
K = °C + 273.15
C
K = °C / 273.15
D
K = °C imes 273.15
Verified step by step guidance1
Understand that the Kelvin (K) scale is an absolute temperature scale starting at absolute zero, while Celsius (°C) is based on the freezing and boiling points of water.
Recall the relationship between Celsius and Kelvin: the size of one degree is the same on both scales, but their zero points differ by 273.15 units.
Use the formula that converts Celsius to Kelvin by adding 273.15 to the Celsius temperature, because 0 °C corresponds to 273.15 K.
Write the conversion formula as \(K = \degree C + 273.15\).
Verify that this formula makes sense by checking that 0 °C converts to 273.15 K, which matches the known freezing point of water in Kelvin.
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