Sapling Learning acmilan leamirg ng a hydrate analysis experiment. Each of the e
ID: 1033587 • Letter: S
Question
Sapling Learning acmilan leamirg ng a hydrate analysis experiment. Each of the experimental errors below could occur when Indicate how the data values would be different from what they would be in an error free experiment. Ermror 1: The hydrate sample was left out after heating and absorbed water prior to the final weighing. Initial mass of the crucible & hydrate Mass of water lost during heating The sample masS after heating Calculated % water by mass ydrate sample was left uncovered prior to the experiment and some water evaporated from the crystal structure. Initial mass of the crucible & hydrate Mass of water lost during heating The sample mass after heating Calculated % water by mass This value would This value would This value would be greaterbe ess be the same O Previous ? Give Up & View Solution 9 Check Answer 0 Net a Ent HintExplanation / Answer
Answer:
In Error 1, when the hydrate sample was heated, the water molecules of the crystal were evaporated similar to an error-free experiment. But since the sample was left out after heating, some water molecules were absorbed. As a result of that final weight of the sample (after heating) was more than that of error-free experiment which means calculated % water by mass would be less than the error-free experiment.
In Error 2, even though the hydrate sample was left uncovered prior to the experiment and some water evaporated from the crystal structure, the weight of the sample after heating would be same as that of the weight in an error-free experiment because the heating would evaporate all the water molecules from the crystal structure (even though some water evaporated prior to the experiment). So, the % water by mass would be same in this experiment as compered to error-free experiment.
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