Chemistry In Context
Chemistry In Context
9th Edition
ISBN: 9781259638145
Author: Fahlman, Bradley D., Purvis-roberts, Kathleen, Kirk, John S., Bentley, Anne K., Daubenmire, Patrick L., ELLIS, Jamie P., Mury, Michael T., American Chemical Society
Publisher: Mcgraw-hill Education,
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Chapter 10.9, Problem 10.19YT
Interpretation Introduction

Interpretation:

The concentration as both % and as molarity of sugar in the aqueous solution has to be calculated.

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114.7 mg of NaCl (MM=58.44 g) is dissolved in 246.42 L of water. What is the concentration of Na+ ion (MM=22.99 g/mol) in ppm? Give your answer rounded to four digits to the right of the decimal point.   Hint: If you are stuck, calculate the %w/w of Na in NaCl using the molar masses - from pe106. Convert g to mg.
I would need help with these questions.  Caffeine Std (ppm) Absorbance (270 nm) 1 0.179 2 0.39 3 0.673 4 0.787     Soda #1 0.233 Soda #2 0.417 Graphically find the concentration in ppm and then calculate in mol/L of Soda #1 and Soda #2?
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