Final answer:
A thermometer marking 122°F corresponds to a temperature of 50°C when converted to Celsius using the standard conversion formula.
Step-by-step explanation:
If a thermometer marks 122°F, the temperature in Celsius can be found using the conversion formula. To convert Fahrenheit to Celsius (C), use the formula: C = (F - 32) × 5/9, where F is the temperature in Fahrenheit.
Using this formula:
C = (122 - 32) × 5/9
C = (90) × 5/9
C = 450 / 9
C = 50°C
Therefore, the temperature in Celsius is 50°C.