Question

The temperature of liquid nitrogen is -196 °C. What is the corresponding reading on the Kelvin scale?

1) 77 K
2) -127 K
3) -91 K
4) 48 K
5) 146 K

Answer 1

The temperature of liquid nitrogen at -196 °C corresponds to 77 K on the Kelvin scale, after adding 273.15 to the Celsius temperature.

Step-by-step explanation:

The temperature of liquid nitrogen is -196 °C. In order to convert this temperature to the Kelvin scale, we need to add 273.15 to the Celsius temperature. This is because the Kelvin scale is an absolute temperature scale starting at absolute zero, which is 0 K or -273.15 °C.

Therefore, to convert -196 °C to Kelvin:

-196 °C + 273.15 = 77.15 K.

Since temperature in Kelvin is not expressed in negative numbers and we round to the nearest whole number if necessary, the corresponding temperature on the Kelvin scale for -196 °C is approximately 77 K, which is option 1).