To convert a temperature from Celsius to Kelvin, you can use the following formula:
[tex]\[ K = °C + 273.15 \][/tex]
Here's the step-by-step process:
1. Identify the given temperature in Celsius:
[tex]\[ °C = 25 \][/tex]
2. Use the formula to convert to Kelvin:
[tex]\[ K = 25 + 273.15 \][/tex]
3. Perform the addition:
[tex]\[ K = 298.15 \][/tex]
4. Since Kelvin is typically presented as an integer in everyday contexts (especially in multiple choice questions), you would round 298.15 to the nearest whole number:
[tex]\[ 298 \][/tex]
Based on these steps, the room temperature of 25°C is approximately [tex]\(298 \, \text{K}\)[/tex].
Therefore, the correct answer is:
B. 298 K
