subject
Chemistry, 28.01.2020 05:31 stodd9503

The plot shows the absorbance spectra for solutions of caffeine, benzoic acid, and mountain dew® soda, each in 0.010 m hcl . a plot contains three spectra with absorbance on the y axis and wavelength in nanometers on the x axis. absorbance measurements range from 0.0 to 1.5, with increments every 0.2. wavelength measurements range from 200 to 300, with increments every 100 nanometers. a note states that all solutions contain 0.010 molar h c l. the spectrum for benzoic acid at a concentration of 8.74 milligrams per liter, begins at an absorbance of about 1.3 and 200 nanometers. absorbance sharply decreases to 0.2 at 210 nanometers, then rises and peaks at an absorbance close to 0.8 and 228 nanometers. the spectrum for a 1 to 50 dilution of mountain dew soda begins at an absorbance of 1.5 and 200 nanometers, then sharply decreases in absorbance to 0.6 at 215 nanometers, then rises and peaks at absorbance close to 0.75 at 228 nanometers, decreases, then peaks again at absorbance 0.27 at 275 nanometers. the spectrum for a caffeine at a concentration of 10.88 milligrams per liter begins at an absorbance of 1.45 at 200 nanometers, then rises slightly, with a peak at absorbance 1.5 at 205 nanometers, then decreases sharply in absorbance until 0.2 at 245 nanometers. the plot then peaks again at an absorbance close to 0.6 at 270 nanometers. what is the approximate absorbance of benzoic acid at 228 nm

ansver
Answers: 3

Another question on Chemistry

question
Chemistry, 22.06.2019 00:30
Asolution of sodium hydroxide was titrated against a solution of sulfuric acid. how many moles of sodium hydroxide would react with 1 mole of sulfuric acid?
Answers: 2
question
Chemistry, 22.06.2019 17:10
Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
Answers: 2
question
Chemistry, 22.06.2019 18:00
Heat is the total potential energy of a substance that can be transferred. true false
Answers: 1
question
Chemistry, 23.06.2019 03:30
Why do electrons further from the nucleus have more energy
Answers: 1
You know the right answer?
The plot shows the absorbance spectra for solutions of caffeine, benzoic acid, and mountain dew® sod...
Questions
question
Mathematics, 21.08.2019 02:00
question
Mathematics, 21.08.2019 02:00
question
Physics, 21.08.2019 02:00
Questions on the website: 13722363