A sensor in a cold storage room reads 12.0 degrees Celsius. What is this reading in kelvins?

1. Zero degrees Celsius corresponds to 273.15 K, since water's freezing point sits at 273.15 K on the Kelvin scale. 2. Converting from Celsius to Kelvin means adding 273.15 to the Celsius reading. 3. Add: 12.0 + 273.15 = 285.15, which rounds to 285.2 K. 4. 273.2 K is the conversion of 0.0 degrees Celsius, not 12.0 degrees Celsius, so it traps a reader who forgets to add the actual reading. 5. 297.2 K comes from adding 12 twice into the offset, overshooting the true value. 6. 12.0 K ignores the 273.15 offset entirely. 7. So 285.2 K is the correctly rounded conversion. _Source: OpenStax Physics (CC BY 4.0), Ch 11 "Thermal Energy, Heat, and Work", section 11.1 Temperature and Thermal Energy_