Section 1: What concept were you investigating, and how does it relate to the guiding question? What is the identity of the unknown hydrate?See the introduction on hydrates to get started. You should discuss what a hydrate is and how you can identify a hydrate using the Law of Constant Proportions.
Section 2: How did you go about your work and why? This is NOT the details of your procedure, but discussion of the processes. For example, describe the methods evaporating water from the hydrate efficiently.
Section 3: What is your argument? There should be a data table with mass values from before and after heating. Discuss the validity and reliability of your data in answering the question. Make clear your reasoning from percent water to identity of the hydrate. You can directly compare your results with the group that had the same unknown.
This third section is where you not only present your data, but also use the values you obtain as evidence in your reasoning. Statements like, “see data table for values” are not acceptable!
We need to figure out how much water is in the white power?
Calculate the percent of water left?
The water was boiled off
1) 0.757
2) 0.747
3) 0.743
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