Question

If a sample of gas with pressure 450kPa at 225°C what will its

pressure be at 25°C if the volume does not change?

Answer 1

Answer: 269.3 kPa

Step-by-step explanation:

Since the volume does not change, the formula: P/T = P/T can be used.

However, all temperatures must first be converted into kelvin, which can be done like this: 225 Celsius + 273 = 498 K; and 25 Celsius + 273 = 298 K.

Now, plug into the formula: 450 / 498 = P / 298 → Cross multiply and divide to get:

P = 269.3 kPa :)