What is the concentration of NaOH (sodium hydroxide), in ppm (m/m), in a solution prepared by dissolving 32 mg of NaOH in 5.8 kg of water? Report your result in decimal notation and to the proper number of significant figures. All numbers are measured. a) 0.18 ppmb) 1.8 ppmc) 0.55 ppmd) 5.5 ppme) no correct response

What is the concentration of NaOH (sodium hydroxide), in ppm (m/m), in a solution prepared by dissolving 32 mg of NaOH in 5.8 kg of water? Report your result in decimal notation and to the proper number of significant figures. All numbers are measured. a) 0.18 ppmb) 1.8 ppmc) 0.55 ppmd) 5.5 ppme) no correct response

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter8: Solutions

Section8.5: Percent Concentration Units

Problem 3QQ

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What is the percent by volume (% v/v) of ethanol in a solution prepared by adding enough water to 75.0 mL of ethanol to make 350.0 mL of ethanol solution? Report your result in decimal notation and to the proper number of significant figures. All numbers are measured. a) 7.50% b) 21.4% c) 75.0% d) 27.3% e) no correct response
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NEED ANSWER PLS FAST 50 g of NaCl has been dissolved in water to come up with a 120 mL of solution. The saline solution has a density of 1.3 g/mL. What is the concentration of the solution in terms of M? Responses A 6.27 M B 9. 17 M C 7.17 M D 0.66 M
Question 14 Caffeine, benzoate, and aspartame content of mountain dew soda was determined using reverse phase HPLC. The concentration of the standard used are as follows, caffeine: 0.70 mg/mL, benzoate: 1.6 mg/mL, and aspartame 5.0 mg/mL. The following volume of the standards were taken to a 50.0 mL volumetric flask and diluted the mark to construct a calibration curve: Caffeine Benzoate Aspartame 1 mL 1 mL 1 mL 2 mL 2 mL 2 mL 3 mL 3 mL 3 mL 4 mL 4 mL 4 mL 5 mL 5 mL 5 mL The 12-oz can mountain dew sample were treated as follows: The 12- oz can were has been left out overnight to get rid the carbonation then, 2 mL were drawn into a plastic syringe, filtered, and placed into a vial. An equal amount of deionized water was added. A 100 μL sample were injected into a sample loop using same parameters with the standards. Assume 12 oz = 354.9 mL The following data were obtained: Caffeine Peak Area Benzoate 3.54 Aspartame Std 1 2.30 3.33 Std 2 4.10 5.59 5.83 Std 3 7.37 9.98 9.63 Std 4 9.56…
Question 15 Caffeine, benzoate, and aspartame content of mountain dew soda was determined using reverse phase HPLC. The concentration of the standard used are as follows, caffeine: 0.70 mg/mL, benzoate: 1.6 mg/mL, and aspartame 5.0 mg/mL. The following volume of the standards were taken to a 50.0 mL volumetric flask and diluted to the mark to construct a calibration curve: Caffeine Benzoate Aspartame 1 mL 1 mL 1 mL 2 mL 2 mL 2 mL 3 mL 3 mL 3 mL 4 mL 4 mL 4 mL 5 mL 5 mL 5 mL The 12-oz can mountain dew sample were treated as follows: The 12- oz can were has been left out overnight to get rid the carbonation then, 2 mL were drawn into a plastic syringe, filtered, and placed into a vial. An equal amount of deionized water was added. A 100 µL sample were injected into a sample loop using same parameters with the standards. Assume 12 oz = 354.9 mL The following data were obtained: Peak Area Benzoate Caffeine Aspartame Std 1 2.30 3.54 3.33 Std 2 4.10 5.59 5.83 Std 3 7.37 9.98 9.63 Std 4 9.56…
Question 17 Caffeine, benzoate, and aspartame content of mountain dew soda was determined using reverse phase HPLC. The concentration of the standard used are as follows, caffeine: 0.70 mg/mL, benzoate: 1.6 mg/mL, and aspartame 5.0 mg/mL. The following volume of the standards were taken to a 50.0 mL volumetric flask and diluted to the mark to construct a calibration curve: Caffeine Benzoate Aspartame 1 mL 1 mL 1 mL 2 mL 2 mL 2 mL 3 mL 3 mL 3 mL 4 mL 4 mL 4 mL 5 mL 5 mL 5 mL The 12-oz can mountain dew sample were treated as follows: The 12- oz can were has been left out overnight to get rid the carbonation then, 2 mL were drawn into a plastic syringe, filtered, and placed into a vial. An equal amount of deionized water was added. A 100 μL sample were injected into sample loop using same parameters with the standards. Assume 12 oz = 354.9 mL The following data were obtained: Caffeine Peak Area Benzoate 3.54 Aspartame Std 1 2.30 3.33 Std 2 4.10 5.59 5.83 Std 3 7.37 9.98 9.63 Std 4 9.56…
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QUESTION 10 Three titration trials were performed and three molar concentrations of NaOH were calculated. The three molar concentrations are as follows: 0.10 M 0.12 M 0.19 M Calculate the standard deviation of the molar concentration of NaOH. Click Save and Submit to save and submit. Click Save All Answers to save all answers. 13 10 5. 6. 8. 近