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13. When you finish your calculations for the previous experiment, you find the density of...
question one question two Aspirin lab (10 points) 5. a) Spectroscopy is being used to determine...
question one
question two
Aspirin lab (10 points) 5. a) Spectroscopy is being used to determine the concentration of aspirin in an unknown sample. The absorbance spectrum of the highest concentration standard [Fe3+, SA) prepared is given below. What wavelength should be used to create the calibration curve for the experiment? Explain your reasoning. 0.14 Absorbance 0.02 250 300 450 500 350 400 Wavelength (nm) Wavelength Explain your reason briefly. b) In this experiment an aspirin tablet was placed in...
1: You need to make an aqueous solution of 0.212 M barium hydroxide for an experiment...
1: You need to make an aqueous solution of 0.212 M barium hydroxide for an experiment in lab, using a 300 mL volumetric flask. How much solid barium hydroxide should you add? ____grams 2: How many milliliters of an aqueous solution of 0.219 M chromium(III) sulfate is needed to obtain 3.70 grams of the salt?____ml 3: In the laboratory you dissolve 23.1 g of zinc nitrate in a volumetric flask and add water to a total volume of 250 ....
1. You need to make an aqueous solution of 0.138 M magnesium bromide for an experiment...
1. You need to make an aqueous solution of 0.138 M magnesium bromide for an experiment in lab, using a 125 mL volumetric flask. How much solid magnesium bromide should you add? 2. How many milliliters of an aqueous solution of 0.163 M aluminum nitrate is needed to obtain 13.4 grams of the salt? 3. n the laboratory you dissolve 19.8 g of calcium chloride in a volumetric flask and add water to a total volume of 250 . mL....
**need help with the last problem of each page (in the box) thank you!' (calculating molarity...
**need help with the last problem of each page (in the box)
thank you!' (calculating molarity & calculating percent
relative/absolute errors)
-} pen Part III. Density Determination Buret : Increment: ImL Family: _10 ML Absolute Uncertainty: 0.1mL Table 1 Trial #1 Trial 2 Trial 3 Initial Buret Reading 0.17 mL 21.98 mL 27.97 mL Final Buret Reading 21.98 mL 43.16 mL 48.95 mL Initial Mass of Flask 113.46 g 135.96 g 157.85 g Final Mass of Flask 135.96 9 157.85...
1) You need to make an aqueous solution of 0.209 M potassium fluoride for an experiment...
1) You need to make an aqueous solution of 0.209 M potassium fluoride for an experiment in lab, using a 300 mL volumetric flask. How much solid potassium fluoride should you add? grams 2)How many milliliters of an aqueous solution of 0.244 M zinc acetate is needed to obtain 11.1 grams of the salt? mL 3) In the laboratory you dissolve 13.9 g of copper(II) chloride in a volumetric flask and add water to a total volume of 125 ....
show all your work please Question 1 Calculate the molar solubility of silver chloride in the...
show all your work please Question 1 Calculate the molar solubility of silver chloride in the following solutions: (Ksp = 1.6 x 10-10) a) In pure water b) In 0.10 M FeCl3 Question 2 The density of a solution is determined using a class A 25-mL volumetric flask and an analytical balance. If the mass of the empty volumetric flask is 26.9872 ± 0.0003 g, the mass of the flask filled with solution is 53.9820 ± 0.0003 g. The absolute...
Your task is to find the density of a liquid. You mistakenly fill the 10 mL...
Your task is to find the density of a liquid. You mistakenly fill the 10 mL volumetric flask all the way to the top, to overflowing, and find the mass of the overfull flask. Then you subtract the mass of the empty flask to get the mass of the liquid. In your calculations, you use 10 mL as your volume; will your result (the calculated density) be too high or too low? Explain.
You need to make an aqueous solution of 0.127 M silver nitrate for an experiment in...
You need to make an aqueous solution of 0.127 M silver nitrate for an experiment in lab, using a 125 mL volumetric flask. How much solid silver nitrate should you add? In the laboratory you dissolve 20.6 g of copper(II) chloride in a volumetric flask and add water to a total volume of 500 . mL. What is the molarity of the solution?
You have 659.3 mL of a stock solution 4.660 M HCl. For a particular experiment, your...
You have 659.3 mL of a stock solution 4.660 M HCl. For a particular experiment, your lab partner prepared a diluted solution for you to use. In her notes, you read: " Using a volumetric pipet, took 246.54 mL of stock solution and diluted it to 739.21 ml in a volumetric flask. Then, took 100.00 mL of that solution and diluted it to 194.63 mL in a second volumetric flask. " What is the concentration that you should report for...
1) You need to make an aqueous solution of 0.125 M silver nitrate for an experiment...
1) You need to make an aqueous solution of 0.125 M silver nitrate for an experiment in lab, using a 250 mL volumetric flask. How much solid silver nitrate should you add? ____ grams 2)How many milliliters of an aqueous solution of 0.160 M aluminum chloride is needed to obtain 6.50 grams of the salt? __ mL
question one
question two
Aspirin lab (10 points) 5. a) Spectroscopy is being used to determine the concentration of aspirin in an unknown sample. The absorbance spectrum of the highest concentration standard [Fe3+, SA) prepared is given below. What wavelength should be used to create the calibration curve for the experiment? Explain your reasoning. 0.14 Absorbance 0.02 250 300 450 500 350 400 Wavelength (nm) Wavelength Explain your reason briefly. b) In this experiment an aspirin tablet was placed in...
**need help with the last problem of each page (in the box)
thank you!' (calculating molarity & calculating percent
relative/absolute errors)
-} pen Part III. Density Determination Buret : Increment: ImL Family: _10 ML Absolute Uncertainty: 0.1mL Table 1 Trial #1 Trial 2 Trial 3 Initial Buret Reading 0.17 mL 21.98 mL 27.97 mL Final Buret Reading 21.98 mL 43.16 mL 48.95 mL Initial Mass of Flask 113.46 g 135.96 g 157.85 g Final Mass of Flask 135.96 9 157.85...
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