How many inches of water column correspond to 25 pascals?

To determine how many inches of water column correspond to 25 pascals, it is essential to understand the conversion between pascals and inches of water column. The conversion factor is that 1 pascal is approximately equal to 0.004014633 inches of water column.

To perform the conversion for 25 pascals, you can multiply the number of pascals by the conversion factor:

25 pascals × 0.004014633 inches/pascal = approximately 0.100366575 inches of water column.

Rounding this to two significant figures gives approximately 0.1 inches. This conversion aligns with the concept that a pascal is a measure of pressure, and converting it to inches of water column helps to contextualize that pressure in terms of a more familiar measurement used in many HVAC and building performance applications.

Therefore, the correct answer indicates that 25 pascals is equivalent to approximately 0.1 inches of water column, reflecting a thorough understanding of pressure measurements in building performance contexts.