A good place for a "741" opamp is in a display cabinet of a museum.
Totally unsuitable here.
Why an opamp. Sensor looks like a standard 1k@25C thermistor.
Use a pull up resistor with the thermistor with a value of the thermistor in the temp range of interrest.
So you have max resolution at ~80C. A 100ohm resistor will do.
Use the example thermistor code you can find in the learning area of this site.
Enter 1000ohm as thermistor value, and 100ohm as fixed resistor value.
Leo..