To concert Kelvin scale into Celsius scale we have to subtract 273 so (a) 293K = 293 - 273 = 20 degree Celsius(b) 470K = 470 - 273 = 197 degree Celsius

Converting Temperature to Celsius Scale

To convert temperature from the Kelvin scale to the Celsius scale, you need to subtract 273.15 from the given temperature in Kelvin. Here, we will convert two temperatures, 293 K and 470 K, to the Celsius scale.

a) 293 K
To convert 293 K to Celsius, we subtract 273.15 from 293:
Celsius = 293 K - 273.15

Calculation:
Celsius = 293 - 273.15
Celsius = 19.85

Therefore, 293 K is equal to 19.85 degrees Celsius.

b) 470 K
To convert 470 K to Celsius, we subtract 273.15 from 470:
Celsius = 470 K - 273.15

Calculation:
Celsius = 470 - 273.15
Celsius = 196.85

Therefore, 470 K is equal to 196.85 degrees Celsius.

Summary:
- To convert temperatures from Kelvin to Celsius, subtract 273.15 from the given temperature in Kelvin.
- The formula for the conversion is: Celsius = Kelvin - 273.15.

Example Calculations:
a) 293 K - 273.15 = 19.85 °C
b) 470 K - 273.15 = 196.85 °C

Conclusion:
By subtracting 273.15 from the given temperature in Kelvin, we can convert it to the Celsius scale. In the examples given, 293 K is equal to 19.85 degrees Celsius, and 470 K is equal to 196.85 degrees Celsius.