A sample of wheat flour weighing 5.000 g was placed in an oven at 105oC for 1 hour. The sample, after cooling to room temperature in a moisture-free environment, was found to weigh 4.678 g. What is...

A sample of wheat flour weighing 5.000 g was placed in an oven at 105oC for 1 hour. The sample, after cooling to room temperature in a moisture-free environment, was found to weigh 4.678 g. What is the % H2O in the sample?

a. 93.56%

b. 6.440%