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Two students in class are given different masses of 2 unknowns and asked to identify them. Studen...

Two students in class are given different masses of 2 unknowns and asked to identify them. Student 1 claims that the unknowns are different solely based on the fact that the mass of water lost for each are different. Student 2 disagrees. Which student is correct? Give supporting explanations for your choice.

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Answer #1

1. two different masses

2. two different water content

So, we must calculate the moisture content of the given species.

For example, if sample 1 with weight 4 gms release 1 gm moisture and if sample 2 with weight 8 gms release 2 gm moisture then

moisture content of sample 1 = moisture content of sample 2

Thus, two samples are of same species.

Student 2 is correct

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