subject
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%

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 22.06.2019 11:00
Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.
Answers: 1
question
Chemistry, 22.06.2019 16:30
For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.
Answers: 2
question
Chemistry, 22.06.2019 21:20
40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume
Answers: 3
question
Chemistry, 23.06.2019 00:00
What does an electron configuration for an atom relate to the atoms placement on the periodic table
Answers: 2
You know the right answer?
During this week's experiment, a student was provided with a stock solution of fd& c red 40 dye...
Questions
question
Biology, 31.10.2019 00:31
question
Geography, 31.10.2019 00:31
question
Biology, 31.10.2019 00:31
question
Mathematics, 31.10.2019 00:31
Questions on the website: 13722363