1)When you have completed your calculations you discover that your grams/mL of B
ID: 961986 • Letter: 1
Question
1)When you have completed your calculations you discover that your grams/mL of BaCl2 is much higher than the actual value, what is the most likely source of error. (Assume that all equipment in working acurately.)
2) You forgot to weigh your piece of filter paper prior to conducting the experiment. You do have the weight of the filter paper plus the solid. Rather than admit that you forgot to weigh your filter paper, you use your neighbor’s value for this. What effect, would this have on your final result of g/mL?
Explanation / Answer
1) The calculated value of BaCl2 in g/mL is much higher than the actual value.
This result indicates that the mass of BaSO4 measured is greater than the actual mass. This positive error is due to measurement of the mass in wet condition.
2) If we use the value of mass of any other filter paper there can be either positive or negative error. Therefore, it is advisable to take the average of at least five filter papers instead of this paper to minimize the error.
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