a. We are given that the formula for Celsius (c) to Kelvin (k) is:
k = c + 273.15
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Now to solve for the formula for c, simply subtract 273.15 from both sides, so that:
k – 273.15 = c + 273.15 – 273.15
k – 273.15 = c
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Rearranging:
c = k – 273.15
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b. We are given that k = 300 Kelvin, therefore find for c:
c = k – 273.15
c = 300 – 273.15
c = 26.85°C