Chemistry concepts and calculations

You need to make a formic acid buffer with a pH of 4.14, and you have a stock so

You need to make a formic acid buffer with a pH of 4.14, and you have a stock solution of 0.682 M formic acid. What concentration (M) of the conjugate base salt, sodium formate, m…

You need to make an aqueous solution of .228 M chromium (III) nitrate for an exp

You need to make an aqueous solution of .228 M chromium (III) nitrate for an experiment in lab, using a 500 mL volumetric flask. How much solid chromium (III) nitrate should you a…

You need to make an aqueous solution of 0.213 M manganese(II) sulfate for an exp

You need to make an aqueous solution of 0.213 M manganese(II) sulfate for an experiment in lab, using a 500 mL volumetric flask. How much solid manganese(II) sulfate should you ad…

You need to make two different buffers. Each buffer should have a buffer concent

You need to make two different buffers. Each buffer should have a buffer concentration of .01M. You have two buffer salts available. Please note that for MES, you only have the ac…

You need to prepare 1.000 L (in a volumetric flask) of 0.50 M phosphate buffer,

You need to prepare 1.000 L (in a volumetric flask) of 0.50 M phosphate buffer, pH 6.23. Use the Henderson Hasselbalch equation with a value of 6.64 for pK2 to calculate the quant…

You need to prepare 1.000 L (in a volumetric flask) of 0.50 M phosphate buffer,

You need to prepare 1.000 L (in a volumetric flask) of 0.50 M phosphate buffer, pH 6.23. Use the Henderson Hasselbalch equation with a value of 6.64 for pK2 to calculate the quant…

You need to prepare 100 mL of a 0.5 M solution of potassium acetate (KCH2COOH).

You need to prepare 100 mL of a 0.5 M solution of potassium acetate (KCH2COOH). You have 50 mL of a 0.75 M KCH2COOH solution and 30 mL of a 5% (w/v) KCH2COOH solution. What volume…

You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic

You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.180 M sodium benzoate. How much of each solution should be mixed to prepare…

You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic

You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.220 M sodium benzoate. How much of each solution should be mixed to prepare…

You need to prepare 250 mL of a 50 mM potassium phosphate buffer at pH=6. In the

You need to prepare 250 mL of a 50 mM potassium phosphate buffer at pH=6. In the lab you have a 1 M stock solution of H3PO4, and solid salts of NaH2PO4, (FW=119.96 g/mole) Na2HPO4…

You need to prepare 250. mL of a 0.150 M aqueous solution of sucrose, CzHzzOn(aq

You need to prepare 250. mL of a 0.150 M aqueous solution of sucrose, CzHzzOn(aq), which is used frequently in biological experiments Which type of glassware should you O A use to…

You need to prepare 250. mL of a 0.400 M aqueous solution of sucrose, C12H22O11(

You need to prepare 250. mL of a 0.400 M aqueous solution of sucrose, C12H22O11(aq), which is used frequently in biological experiments. a) which type of glassware should you use …

You need to prepare 250. mL of a 0.600 M aqueous solution of sucrose, C_12H_220_

You need to prepare 250. mL of a 0.600 M aqueous solution of sucrose, C_12H_220_11(aq), which is used frequently in biological experiments. which type of glassware should you use …

You need to prepare 250. mL of a 0.600 M aqueous solution of sucrose, CoHzOaq),

You need to prepare 250. mL of a 0.600 M aqueous solution of sucrose, CoHzOaq), which is used frequently in biological experiments Which type of glassware should you O A use to ma…

You need to prepare 250. mL of a 0.700 M aqueous solution of sucrose, C_12H_22O_

You need to prepare 250. mL of a 0.700 M aqueous solution of sucrose, C_12H_22O_11(aq), which is used frequently in biological experiments. Which type of glassware should you use …

You need to prepare 250.0 mL of HCl solution from a 4.00 M HCl stock solution. a

You need to prepare 250.0 mL of HCl solution from a 4.00 M HCl stock solution. a 1.50 M Which type of glassware should you use to make the solution (assuming that the accuracy of …

You need to prepare 250.0 mL of a 1.10 M HCL solution from a 4.00 M HCL stock so

You need to prepare 250.0 mL of a 1.10 M HCL solution from a 4.00 M HCL stock solution. Which type of glassware should you use to make the solution (assuming that the accuracy of …

You need to prepare 50 gallons of a 200 part per million solution of chlorine fr

You need to prepare 50 gallons of a 200 part per million solution of chlorine from liquid bleach containing 5.5% active chlorine. Part I: How many liters of pure chlorine is in 50…

You need to prepare an acetate buffer of pH 5.54 from a 0.677 M acetic acid solu

You need to prepare an acetate buffer of pH 5.54 from a 0.677 M acetic acid solution and a 2.04 M KOH solution. If you have 825 mL of the acetic acid solution, how many milliliter…

You need to prepare and use different solutions of sodium hydroxide (NaOH, 40.0

You need to prepare and use different solutions of sodium hydroxide (NaOH, 40.0 g/mol). A) How many grams of NaOH are needed to prepare 500 mL of an aqueous 1.30M solution? B) Exp…

You need to produce a buffer solution that has a pH of 5.02. You already have a

You need to produce a buffer solution that has a pH of 5.02. You already have a solution that contains 10. mmol (millimoles) of acetic acid. How many millimoles of acetate (the co…

You need to produce a buffer solution that has a pH of 5.26. You already have a

You need to produce a buffer solution that has a pH of 5.26. You already have a solution that contains 10. mmol (millimoles) of acetic acid. How many millimoles of acetate (the co…

You need to produce a buffer solution that has a pH of 5.38. You already have a

You need to produce a buffer solution that has a pH of 5.38. You already have a solution that contains 10. mmol (millimoles) of acetic acid. How many millimoles of acetate (the co…

You need to separate a mixture of proteins of expected sizes: 12 kDa, 45 kDa, 82

You need to separate a mixture of proteins of expected sizes: 12 kDa, 45 kDa, 82 kDa, and 160 kDa using an appropriate gel filtration column. The lab has the following choices: (A…

You need to synthesize 4-octyne from ethyne and any bromoalkane you need. List t

You need to synthesize 4-octyne from ethyne and any bromoalkane you need. List the reagents you need in the order you would need to use them to make 4-octyne. Use the letter from …

You need to synthesize 4-octyne from ethyne and any bromoalkane youneed. List th

You need to synthesize 4-octyne from ethyne and any bromoalkane youneed. List the reagents you need in the order you would need to usethem to make 4-octyne. Use the letter from th…

You need to synthesize 4-octyne from ethyne and any bromoalkane youneed. List th

You need to synthesize 4-octyne from ethyne and any bromoalkane youneed. List the reagents you need in the order you would need to usethem to make 4-octyne. Use the letter from th…

You need to synthesize 4-octyne from ethyne and any bromoalkane youneed. List th

You need to synthesize 4-octyne from ethyne and any bromoalkane youneed. List the reagents you need in the order you would need to usethem to make 4-octyne. Use the letter from th…

You need to synthesize the product in the blue box using sodium cyanide (NaCN) a

You need to synthesize the product in the blue box using sodium cyanide (NaCN) as the source of the nitrogen. Input the letter that corresponds to the other species (besides NaCN)…

You need to take a medicine orally and want quick action. The medicine is availa

You need to take a medicine orally and want quick action. The medicine is available in the form of a compressed tablet or as a loose powder. Which form would give you the desired …

You need to weigh your own large Pyrex test tube and know the empty mass, mass w

You need to weigh your own large Pyrex test tube and know the empty mass, mass with KCIO, mixture before heating, mass with KCIO, mixture and catalyst and mass of all of the above…

You notice one day that when you are heating up some water and liquid water form

You notice one day that when you are heating up some water and liquid water forms as condensation occurs on your stovetop. You apply this to a room that is 20 feet in length, 12 f…

You now have 8 Kinder Eggs and all of them have a toy inside. Each toy weighs (s

You now have 8 Kinder Eggs and all of them have a toy inside. Each toy weighs (significantly) differently from the rest. You are told that two of the eggs have the same toy inside…

You now have two half-reactions in which the elements are balanced (shown below)

You now have two half-reactions in which the elements are balanced (shown below) but before you sum them, you need to account for the transfer of showed you how to make certain th…