If the % moisture is 3.5% and the Absorption Factor is 0.7%, what is the % Free Moisture?

To determine the percentage of free moisture, you can use the relationship between moisture content and absorption factor. Free moisture is generally obtained by subtracting the absorption factor from the total moisture content.

In this case, the total moisture content is 3.5%, while the absorption factor, which reflects the amount of moisture absorbed by the material and not considered as free moisture, is 0.7%.

To find the percentage of free moisture, the calculation would be as follows:

[ \text{Free Moisture} = \text{% Moisture} - \text{Absorption Factor} ]

[ \text{Free Moisture} = 3.5% - 0.7% ]

[ \text{Free Moisture} = 2.8% ]

Thus, the correct percentage of free moisture is 2.8%. This calculation clarifies that free moisture is simply what's left of the moisture content after accounting for the absorbed moisture, which is why this answer reflects an accurate understanding of moisture dynamics in the context of materials.