As you are studying for finals, you calculate the concentration of caffeine in an energy drink and discover that it is 0.02967 M in caffeine. If a cup of your favorite coffee contains 257 mg of caffeine, how many mL of the energy drink will provide the same amount of caffeine? The molecular formula of caffeine is C8H10N4O2. _______________mL energy drink.

As you are studying for finals, you calculate the concentration of caffeine in an energy drink and discover that it is 0.02967 M in caffeine. If a cup of your favorite coffee contains 257 mg of caffeine, how many mL of the energy drink will provide the same amount of caffeine? The molecular formula of caffeine is C8H10N4O2. _______________mL energy drink.

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter15: Complex Ion And Precipitation Equilibria

Section: Chapter Questions

Problem 57QAP: Calcium ions in blood trigger clotting. To prevent that in donated blood, sodium oxalate, Na2C2O4,...

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Calculate the percent difference in the two values for the molarity of the NaOH solution by: %Difference =[M1-M2]\Mavg x100% Given: 1st value for the molarity of NaOH = 0.0647 M 2nd value for the molarity of NaOH= 0.2627 M NaOH vs H2SO4 Burette solution is NaOH and the pipette solution is 10.0 mL of 0.205 M H2SO4 Titration Initial burette reading Final burette reading Volume of NaOH consumed Average volume of NaOH Approximate 0.0 mL 31.8 mL 31.8 mL 31.7 mL Titration 1 0.0 mL 31.5 mL 31.5 mL Titration 2 0.0 mL 31.7 mL 31.7 mL To find the average volume Average volume = 31.8 mL + 31.5 mL + 31.7 mL331.8 mL + 31.5 mL + 31.7 mL3 = 31.7 mL NaOH vs CH3COOH Burette solution is NaOH and the pipette solution is 5.0 mL of Vinegar Titration Initial burette reading Final burette reading Volume of NaOH consumed Average volume of NaOH Approximate 0.0 mL 20.1 mL 20.1 mL 20.3 mL Titration 1 0.0 mL 20.9 mL 20.9 mL Titration 2 0.0 mL 20.0 mL…
A solution containing AgNO3 is mixed with a solution of NaCl to form a solution that is 0.10 M in AgNO3 and 0.075 M in NaCl. What will happen once these solutions are mixed? Given: Ksp (AgCl) = 1.77 x 10-10
I need help with my chemistry homework! 1. a) Calculate the mass of solid potassium chlorate (KClO3) required to make 200.0 mL of a 2.00 M solution b) After making the solution described above, you realize that you need to dillute it produce 100.0 mL of a 0.10 M solution. Calculate the volume of the original solution (in mL) will you need to use. 2. a) is the image 2. b) Calculate the molar concentration of the saturated solution of KClO3 at 60.0 °C described in part (a) above.
Calcium ions in blood trigger clotting. To prevent that in donated blood, sodium oxalate, Na2C2O4, is added to remove calcium ions according to the following equation. C2O42(aq)+Ca2+(aq)CaC2O4(s)Blood contains about 0.10 mg Ca2+/mL. If a 250.0-mL sample of donated blood is treated with an equal volume of 0.160 M Na2C2O4, estimate [Ca2+] after precipitation. (KspCaC2O4=4109)
A commercial vinegar was analyzed by titration to determine the percent acetic acid. Briefly, 10.00 mL of vinegar sample was diluted to 100. mL solution in volumetric flask. A 25.00 mL aliquot from the diluted vinegar required 25.55 mL of 0.1005 M NaOH to reach the phenolphthalein endpoint. Which is the correct equation between the analyte and titrant reaction? CH3COOH + NaOH → NaCH3COO + H2O 2CH3COOH + NaOH → NaCH3COO + H2O C20H14O4 + NaOH → NaC20H14O4 + H2O CH3COOH + 2NaOH → NaCH3COO + H2O
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A sample weighing 10.91 g containing an unknown amount of H3PO4 was diluted with water and titrated with a standardized concentration of 0.7255 M NaOH. The endpoint was reached after 27.03 mL of the titrant was added. What is the % H3PO4 (97.994 g/mole) in the sample? H3PO4 + 2 NaOH --> Na2HPO4 + 2H2O ROUND OFF FINAL ANSWER TO FOUR (4) SIG FIGS
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