Question

Calculate the % moisture content, on both wet and dry bases, of a flour sample considering the following: wt of empty pan = 12.5 g, wt of sample = 2.0372 g, wt of sample + pan after drying = 14.2631 g.

Answer 1

The % moisture content of the flour sample on a wet basis is approximately 13.5%, and on a dry basis, it is approximately 15.5%. This is calculated by using the weights of the sample before and after drying and the weight of the pan.

Step-by-step explanation:

To calculate the % moisture content on a wet basis, you subtract the weight of the pan with the dried sample from the weight of the pan with the undried sample. Then, divide the difference by the weight of the undried sample and multiply by 100 to get the percentage. On a dry basis, you divide the difference by the weight of the dry sample and multiply by 100.

Using the figures provided:

• Weight of the empty pan = 12.5 g
• Weight of the sample = 2.0372 g
• Weight of sample + pan after drying = 14.2631 g

The weight of the dried sample is obtained by subtracting the weight of the empty pan from the combined weight after drying: 14.2631 g - 12.5 g = 1.7631 g.

The moisture content on a wet basis is:

(Weight of undried sample - Weight of dried sample) / Weight of undried sample * 100

(2.0372 g - 1.7631 g) / 2.0372 g * 100 ≈ 13.5%

The moisture content on a dry basis is:

(Weight of undried sample - Weight of dried sample) / Weight of dried sample * 100

(2.0372 g - 1.7631 g) / 1.7631 g * 100 ≈ 15.5%