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Questions: 1. A student determined the mass of a 100 mL volumetric flask and then prepared a 4% sugar solution by transferring 4.00 g of sugar to the flask and diluting to the mark with distilled water. The student forgot to shake the flask to thoroughly mix the contents prior to determining the mass of the flask plus solution. Will the student's density be higher, lower, or no different from the correct value? Explain 2. I. M. Fumblefingers determined the mass of a 100 mL volumetric flask but did not notice that it contained about 1 mL of water. Fumblefingers then prepared an 8% sugar solution by transferring 8.00 g of sugar to the flask and filling to the mark with distilled water. I. M. then determined the mass of the flask plus the 8% sugar solution. a. Will the concentration of the solution be higher, lower, or no different from the correct value? Explain. b. Will the density Fumblefingers determines for this solution be higher, lower or no different from the correct value? Explain. 3. A distracted student determined the mass of a dry 100 mL volumetric flask without a stopper. He then filled it with 4% sugar solution inserted a stopper and determined the mass of the stoppered flask and solution. Will the density he determines for the solution be higher, lower, or no different from the correct value? Explain 4. After weighing it, a student spilled some sugar when transferring it to the 100 mL volumetric flask as part of preparing a 4.00% sugar solution. Will the density of the solution be higher, lower, or no different from the correct value? Explain

          Questions:
1. A student determined the mass of a 100 mL volumetric flask and then
prepared a 4% sugar solution by transferring 4.00 g of sugar to the flask and
diluting to the mark with distilled water. The student forgot to shake the
flask to thoroughly mix the contents prior to determining the mass of the flask
plus solution. Will the student's density be higher, lower, or no different from
the correct value? Explain
2. I. M. Fumblefingers determined the mass of a 100 mL volumetric flask but did
not notice that it contained about 1 mL of water. Fumblefingers then
prepared an 8% sugar solution by transferring 8.00 g of sugar to the flask
and filling to the mark with distilled water. I. M. then determined the mass of
the flask plus the 8% sugar solution.
a. Will the concentration of the solution be higher, lower, or no different from
the correct value? Explain.
b. Will the density Fumblefingers determines for this solution be higher,
lower or no different from the correct value? Explain.
3. A distracted student determined the mass of a dry 100 mL volumetric flask
without a stopper. He then filled it with 4% sugar solution inserted a stopper
and determined the mass of the stoppered flask and solution. Will the
density he determines for the solution be higher, lower, or no different from
the correct value? Explain
4. After weighing it, a student spilled some sugar when transferring it to the 100
mL volumetric flask as part of preparing a 4.00% sugar solution. Will the
density of the solution be higher, lower, or no different from the correct
value? Explain

Questions:
1. A student determined the mass of a 100 mL volumetric flask and then
prepared a 4% sugar solution by transferring 4.00 g of sugar to the flask and
diluting to the mark with distilled water. The student forgot to shake the
flask to thoroughly mix the contents prior to determining the mass of the flask
plus solution. Will the student's density be higher, lower, or no different from
the correct value? Explain
2. I. M. Fumblefingers determined the mass of a 100 mL volumetric flask but did
not notice that it contained about 1 mL of water. Fumblefingers then
prepared an 8% sugar solution by transferring 8.00 g of sugar to the flask
and filling to the mark with distilled water. I. M. then determined the mass of
the flask plus the 8% sugar solution.
a. Will the concentration of the solution be higher, lower, or no different from
the correct value? Explain.
b. Will the density Fumblefingers determines for this solution be higher,
lower or no different from the correct value? Explain.
3. A distracted student determined the mass of a dry 100 mL volumetric flask
without a stopper. He then filled it with 4% sugar solution inserted a stopper
and determined the mass of the stoppered flask and solution. Will the
density he determines for the solution be higher, lower, or no different from
the correct value? Explain
4. After weighing it, a student spilled some sugar when transferring it to the 100
mL volumetric flask as part of preparing a 4.00% sugar solution. Will the
density of the solution be higher, lower, or no different from the correct
value? Explain

Added by Christopher M.

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