https //lab X Late Nite Labs C Step 1 in The Procedure O... X bs HZC 4164 CHE 17

Question

https //lab X Late Nite Labs C Step 1 in The Procedure O... X bs HZC 4164 CHE 17. c Q. I 5 food dye were in the 0.235 L solution of drink mix 1m E n/471/d Late Nite Labs COURSES LAB HANDBOOK SUPPORT KRISTINA PICCIANO macmillan learning QUANTITATIVE DETERMINATION OF FooD DYES IN POWDERED DRINK MIXES Multiple Choice Assignment SHOW LAB WORK QUESTION 19 OF 24 Given that the molar mass of the Red 40 dye is equal to 496.42 g/mol, how many grams of Red 40 food dye were in the 0.235 Lsolution of drink mix? Remember that you diluted your original solution ten fold before measuring its absorbance. Choose the closest answer. A. 0.0011 g B. 0.011 g C. 0.0045 g D. 0.085 g 6 unanswered questions SUBMIT FOR GRADING SAVE AND FINISH LATER NEED TECHNICAL SUPPORT?

Explanation / Answer

MW of Red 40 dya --> 496.42 g /mol

find mass for

V = 0.235 L

so...

if tenfolded... then

choose between A and B

so..

if it is diluted, you should choose 0.011 g, relating to the V = 0.235 L and its molar concentration ( from abssorption)

note that you can't choose 0.0011 grams since this is the diluted case, not the original case!

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