Chemistry, 07.11.2019 20:31 hnsanders00
During this week's experiment, a student was provided with a stock solution of fd& c red 40 dye that was 0.378 mm. following the procedure in the lab manual, she created solution #2 by pipetting 5 ml of solution #1 to a 25 ml volumetric flask, then diluted to the calibration line with di water. what is the concentration of solution #2 in mm? your answer should be between ~.001 and .05after creating her standard curve for absorption versus the concentration (m) of fd& c red 40, a student found that her best fit linear line for fd& c red 40 was y = 2607x + -0.006.her kool-aid sample had an absorbance of 0.291. if 0.46 grams of kool-aid powder was used to prepare an 8-fl oz cup of her assigned flavor, what is the percent by mass of fd& c red 40 in her 8-fl oz cup? your answer should be between ~.9% and 11%
Answers: 1
Chemistry, 22.06.2019 07:00
In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?
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Chemistry, 22.06.2019 11:00
The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?
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Chemistry, 22.06.2019 13:30
Table sugar completely dissolved in water is an example of a?
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During this week's experiment, a student was provided with a stock solution of fd& c red 40 dye...
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