. A 100 mg vitamin C tablet weighted 0.645 g. A student crushed the tablet and transferred 0.119 g of the crushed powder into a 100 mL volumetric flask. What is the expected mass of ascorbic acid in the volumetric flask (in mg), according to the vitamin C manufacturer's label?
1. A 100 mg vitamin C tablet weighted 0.645 g. A student crushed the tablet and transferred 0.119 g of the crushed powder into a 100 mL volumetric flask. What is the expected mass of ascorbic acid in the volumetric flask (in mg), according to the vitamin C manufacturer's label?
2. A 100 mg vitamin C tablet weighed 1.681 g. A student crushed the tablet and transferred 0.150 g of the crushed powder into a 100 mL volumetric flask, dissolved the powder in ~30 mL DI water, then filled the flask to the calibration line with DI water and mixed well to create Solution 1.
The student then transferred 19.82 mL of Solution 1 into a 100 mL volumetric flask and diluted to the calibration line with DI water to create Solution 2.
Calculate the expected concentration (in mM) of ascorbic acid in Solution 2.
Hint: Remember that you are starting with a 100 mg vitamin C tablet.
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